# Debug

🦄 Chevereto V4 users

Check the updated documentation at 🐞 Debug (opens new window).

Debug enables to dump information about errors that may be affecting the software functionality. If Chevereto isn't working properly you must start debugging it.

# Configuring debug

Debug can be configured using environment variables or using the settings file.

# Debug level

Depending on your work context you may need to configure debug accordingly.


Error level >= 2 is not recommended for production environments. Is not safe to print the errors to the screen, handle it with care.

Level Description
0 No debug
1 Debug to log_device
2 Print errors (no logging)
3 Print errors and log to log_device

Use CHEVERETO_DEBUG_LEVEL=3 or add the following to your app/settings.php file:

$settings['debug_level'] = 3;

# Log device

Configure your own error log device to control where the logs will be sent. If you don't alter this it will fallback to the default system log device.


Containers will always log to /dev/stderr regardless this setting.

Use CHEVERETO_ERROR_LOG=log_device or add the following to your app/settings.php file:

$settings['error_log'] = 'log_device';

# Accessing logs

To access logs you will need to know first the location for those. If you don't configure debug Chevereto will follow the default error_log (opens new window) handling configured for your PHP installation.

# Where are the default logs?

This vary a lot depending the server provider and how PHP runs in the server. In doubt, check first with your service provider.

  • PHP
    • Logs by default at syslog
  • Apache
    • Logs by default at /var/log/apache2/error.log
    • Virtual host directive defines custom error log location
    • Commonly configured for /var/www/domain.com/logs
    • Logs by default at /var/log/nginx/error.log
    • Server block defines custom error log location
    • Commonly configured for /var/www/domain.com/logs
  • cPanel
    • Logs by default at ../domain.com.error.log (parent of public_html folder)
    • Vary a lot from providers and cPanel version
  • Docker
    • Logs to /dev/stderr

# I can't find the logs

You can configure debug_level >= 2 but note that such error reporting level could compromise your installation. Restrict any public access to your website and revert back to debug_level=1 as soon as possible.

If you can't find the logs or you are having a hard time with this you can request extra support (opens new window) so we can safely debug your installation.

# Reading logs

Logs can be easily accessed by direct file access or by running commands accordingly.

# Error reporting

Not for production!

Enable this is recommended only in development environments.

To enable printed error reporting you will need to go to system settings. By enabling this all the runtime errors will be printed which means that they will be visible.