API Backups - “Undefined error. Please try again.”

Hi everyone, I’m new and just installed MAINWP. I’m getting errors like “Undefined error. Please try again.” I’d like to see what’s happening in the logs, but in “System info → Error log” I get this message:
MainWP is unable to find your error logs. Please contact your host for server error logs.
I followed this guide but to no avail.

Can anyone help me?
Thanks.

Hey @atanet

Welcome to the MainWP community!

Where are you seeing these errors, “Undefined error. Please try again.”? Can you please provide a screenshot?

Generally speaking, very few MainWP-specific issues will be logged in the WordPress debug log, unless there is a major issue with the code.

The easiest way to see the WordPress debug logs would be with a plugin such as this one: Debug Log Manager – Conveniently Monitor and Inspect Errors – WordPress plugin | WordPress.org

MainWP itself has its own logging, which is available on this page: your-mainwp-dashboard.com/wp-admin/admin.php?page=ActionLogs

Hi, the logs seem to be working today. I’m attaching a screenshot of where I saw the error.
I’m also attaching a screenshot of the error I get when I manually launch the backup.
Thanks.

Hey @atanet

What API Backups provider is that child site using?
Did you configure the API Backups (wp-admin/admin.php?page=SettingsApiBackups) as instructed in our docs (Manage Backups - MainWP Documentation)?

And can you please post the community system report from your MainWP Dashboard for review? The report is located in your Dashboard under Info → Server (your-mainwp-dashboard.com/wp-admin/admin.php?page=ServerInformation), on the top right of the page.

Be sure to use the button like the one below; this button hides all your private information:

image

Pressing the button auto-copies the report to your clipboard then just paste it in a reply here.

Hi,
I configured Plesk (WP Toolkit) following the guide.

Here’s the report.


### WordPress Check                Required                                               Detected                                              ###

FileSystem Method                  = direct                                               direct                                       Pass        
MultiSite Disabled                 =true                                                  true                                         Pass        
WordPress Memory Limit             >=64M                                                  256M                                         Pass        
WordPress Version                  >=6.2                                                  7.0                                          Pass        

### PHP                            Required                                               Detected                                              ###

cURL Extension Enabled             =true                                                  true                                         Pass        
cURL Timeout                       >=300 seconds                                          300                                          Pass        
cURL Version                       >=7.29.0                                               7.61.1                                       Pass        
Function `tmpfile` enabled         N/A                                                    Enabled                                      Pass        
OpenSSL Version                    >=OpenSSL/1.1.0                                        OpenSSL/1.1.1k                               Pass        
OpenSSL Working Status             Yes                                                    Yes                                          Pass        
PCRE Backtracking Limit            >=10000                                                1000000                                      Pass        
PHP Allow URL fopen                N/A                                                    YES                                                      
PHP Disabled Functions             N/A                                                    opcache_get_status,                                      
PHP Exif Support                   N/A                                                    YES                                                      
PHP IPTC Support                   N/A                                                    YES                                                      
PHP Loaded Extensions              N/A                                                    Core, PDO, PDO_ODBC, Phar, Reflection, SPL, SimpleXML, Zend OPcache, bcmath, bz2, calendar, cgi-fcgi, ctype, curl, date, dba, dom, enchant, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imagick, imap, intl, json, ldap, libxml, mbstring, mysqli, mysqlnd, odbc, openssl, pcre, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, posix, pspell, random, redis, session, soap, sockets, sodium, sqlite3, standard, sysvmsg, sysvsem, sysvshm, tidy, tokenizer, xml, xmlreader, xmlwriter, xsl, zip, zlib            
PHP Max Execution Time             >=30 seconds                                           30                                           Pass        
PHP Max Input Time                 >=30 seconds                                           60                                           Pass        
PHP Memory Limit                   >=256M                                                 256M                                         Pass        
PHP Post Max Size                  >=2M                                                   8M                                           Pass        
PHP Session enabled                N/A                                                    Enabled                                      Pass        
PHP Upload Max Filesize            >=2M                                                   2M                                           Pass        
PHP Version                        >=7.4                                                  8.2.27                                       Pass        
PHP XML Support                    N/A                                                    YES                                                      
SSL Extension Enabled              =true                                                  true                                         Pass        
SSL Warnings                       = empty                                                                                             Pass        

### MySQL                          Required                                               Detected                                              ###

MySQL Client Encoding              N/A                                                    utf8mb4                                                  
MySQL Mode                         N/A                                                    ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION            
MySQL Version                      >=5.0                                                  10.3.39-MariaDB                              Pass        

### Connectivity & Authentication  Detected Value                                                                                   ###

Force IPv4                         No                                                                                                  
HTTPS                              Enabled                                                                                             
OpenSSL signature algorithm        OPENSSL_ALGO_SHA256 (Default)                                                                       
Permalink structure                /%year%/%monthnum%/%day%/%postname%/                   Pass                                         
Public Dashboard IP                Detected                                               Pass                                         
Server self connect                Unexpected response body. Note: This is common and usually not a problem unless WP-Cron or loopback requests are failing.Warning                                      
Verify connection method           OpenSSL (default)                                                                                   
Verify SSL certificate             Yes                                                                                                 
WordPress REST API reachability    Request failed: cURL error 28: Operation timed out after 15001 milliseconds with 0 bytes receivedFail                                         

### Scheduler & Background Jobs    Detected Value                                                                                   ###

Advanced automatic updates scheduleDaily at 0:00                                                                                       
Check for available updates        Last run: 03/06/2026 08:46 | Next run: 03/06/2026 20:46                                             
Daily update frequency             Twice per day                                                                                       
Daily update time                  4:00                                                                                                
Reconnect sites                    Last run: 03/06/2026 14:29 | Next run: 03/06/2026 15:29                                             
Uptime monitoring schedule         Last run: 02/06/2026 07:53 | Next run: 03/06/2026 14:59                                             
Use WP Cron                        Yes                                                                                                 

### Server Configuration           Detected Value                                      ###

Accept Content                     text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Charset Content             N/A                                                    
Architecture                       64         bit                                         
Gateway Interface                  CGI/1.1                                                
Memory Usage                       7.33 MB                                                
Operating System                   Linux                                                  
Request Time                       1780491612                                             
Server Protocol                    HTTP/1.0                                               
Server Software                    Apache                                                 
User Agent                         Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.0

### MainWP Overview                Detected Value                                                                                   ###

MainWP Dashboard Version           Latest: 6.1.1 | Detected: 6.1.1                        Pass                                         
MainWP REST API enabled            Yes                                                    Pass                                         
MainWP upload directory            Writable                                               Pass                                         
Number of connected sites          1                                                                                                   

### MainWP General Settings        Detected Value                                                                                   ###

Abandoned plugins/themes tolerance 365 days                                                                                            
Advanced automatic updates delay   1 day                                                                                               
After updates HTTP response check  No                                                                                                  
After updates HTTP response method HEAD                                                                                                
Archive format                     tar.gz                                                                                              
Auto detect maximum file descriptors on child sitesYes                                                                                                 
Automatic updates day              Every day                                                                                           
Automatic updates frequency        Daily                                                                                               
Automatic updates time             0:00                                                                                                
Backup before update               No                                                                                                  
Backup to external sources         Yes                                                                                                 
Backups kept on server             1                                                                                                   
Dashboard widgets shown            16 visible                                                                                          
Date format                        d/m/Y                                                                                               
Disable update confirmations       No                                                                                                  
Execute backup tasks in chunks     No                                                                                                  
Full backup tolerance before update7 days                                                                                              
Hide Update Everything             No                                                                                                  
Load files in memory before zippingYes                                                                                                 
MainWP legacy backups enabled      No                                                                                                  
Maximum file descriptors fallback value150                                                                                                 
Plugin advanced automatic updates  Disabled                                                                                            
Primary backup system              Native backups                                                                                      
Send email when backup fails       No                                                                                                  
Send email when backup starts      No                                                                                                  
Show language updates              Yes                                                                                                 
Sidebar position                   Right                                                                                               
Theme advanced automatic updates   Disabled                                                                                            
Time format                        H:i                                                                                                 
Timezone                           Europe/Rome                                                                                         
Translation advanced automatic updatesDisabled                                                                                            
WP Core advanced automatic updates Disabled                                                                                            

### MainWP Advanced Settings       Detected Value                                                                                   ###

Browser cache expiration time      10 minutes                                                                                          
Force IPv4                         No                                                                                                  
Maximum simultaneous install and update requests3                                                                                                   
Maximum simultaneous requests      4                                                                                                   
Maximum simultaneous requests per IP1                                                                                                   
Maximum simultaneous sync requests 8                                                                                                   
Maximum simultaneous uptime monitoring requests10                                                                                                  
Minimum delay between requests     200 ms                                                                                              
Minimum delay between requests to the same IP1000 ms                                                                                             
OpenSSL signature algorithm        OPENSSL_ALGO_SHA256 (Default)                                                                       
Optimize data loading              Yes                                                                                                 
Selected data to sync              20 of 20 enabled                                                                                    
Sites processed per sync batch     10                                                                                                  
Sync batch sleep interval          5 seconds                                                                                           
Verify connection method           OpenSSL (default)                                                                                   
Verify SSL certificate             Yes                                                                                                 

### MainWP Monitoring Settings     Detected Value                                                                                   ###

Down confirmation check            Enabled                                                                                             
Enable site health monitoring      Yes                                                                                                 
Enable uptime monitoring           Yes                                                                                                 
Interval                           23h                                                                                                 
Keyword monitoring value           Not configured                                                                                      
Method                             HEAD                                                                                                
Monitor type                       HTTP(s)                                                                                             
Monitoring data retention          180 days                                                                                            
Site Health threshold              Should be improved                                                                                  
Timeout                            60s                                                                                                 
Up HTTP codes                      200,201,202,203,204,205,206                                                                         

### MainWP Email Settings          Detected Value                                                                                   ###

Daily Digest Email                 Enabled | 1 recipient(s) | Subject set | Heading set                                                
Extension License Deactivation Notification EmailEnabled | 1 recipient(s) | Subject set | Heading set                                                
Site Health Monitoring Email       Enabled | 1 recipient(s) | Subject set | Heading set                                                
Uptime Monitoring Email            Enabled | 1 recipient(s) | Subject set | Heading set                                                

### MainWP Cost Tracker Settings   Detected Value                                                                                   ###

Currency                           USD                                                                                                 
Currency position                  left                                                                                                
Decimal separator                  .                                                                                                   
Decimals                           2                                                                                                   
Payment methods                    0 configured                                                                                        
Product categories                 5 configured                                                                                        
Thousand separator                 ,                                                                                                   

### MainWP Network Activity SettingsDetected Value                                                                                   ###

Automatically archive logs         No                                                                                                  
Child-site Network Activity retention7 days                                                                                              
Data retention period              Three years                                                                                         
Disabled change-log event types    7                                                                                                   
Disabled child-site event types    0                                                                                                   
Disabled dashboard event types     0                                                                                                   
Enable Network Activity logging    Yes                                                                                                 

### MainWP API Backups Settings    Detected Value                                                                                   ###

Akamai (Linode)                    Disabled                                                                                            
Cloudways                          Disabled                                                                                            
cPanel (WP Toolkit)                Disabled                                                                                            
DigitalOcean                       Disabled                                                                                            
GridPane                           Disabled                                                                                            
Kinsta                             Disabled                                                                                            
Plesk                              Enabled | profile configured, secret configured                                                     
Vultr                              Disabled                                                                                            

### MainWP Tools Settings          Detected Value                                                                                   ###

Chatbase                           No                                                                                                  
Current MainWP theme               default                                                                                             
Guided tours                       No                                                                                                  
Guided video                       No                                                                                                  

### Debug & Logs                   Detected Value                                                                                   ###

PHP error_log path                 Configured                                                                                          
PHP error_log readable             Yes                                                                                                 
PHP log_errors                     Yes                                                                                                 
WP_DEBUG                           Yes                                                                                                 
WP_DEBUG_DISPLAY                   No                                                                                                  
WP_DEBUG_LOG                       Yes                                                                                                 

### Potential Conflicts            Detected Value                                                                                   ###

Caching / performance plugins      None detected                                                                                       
Drop-ins / object cache            None detected                                                                                       
Maintenance mode indicators        None detected                                                                                       
Security / access-control plugins  None detected                                                                                       

### Extensions                     Version                                                License                                               ###

No installed extensions            

### Plugin                         Version                                                                                          ###

MainWP Dashboard                   6.1.1                                                  Active                                       

Thanks @atanet.

Nothing in the system report stands out as an obvious issue.

Would you mind opening a private Help Desk ticket so we can collect some additional information & investigate further?

Please refer to this Community thread by its URL in the ticket.

Hi, ticket open.
Thank you

The issue was related to the Plesk URL. It contained a trailing /.

We will improve handling Plesk URLs in a future Dashboard release.

Until then, we’ve added a comment on this to our documentation: Manage Backups - MainWP Documentation