Matomo (Piwik) may in rare cases display an error such as Internal Server Error or a 500 server error. This sometimes shows up as a white page, sometimes called the ‘White screen of death’. When you have such problem, please follow the following steps:

  1. The most common solution to the message Oops... there was a problem during the request. is to setup Auto-Archiving in your Matomo by 1) Enabling the crontab to run the core:archive command and 2) Disabling « Archive reports when viewed from the browser » in the General Settings.
  2. If the error persists, or you’re getting a white screen/page, it indicates that there is a problem on the server: check in your web server error log file for an error message.
  3. When you find an error message in your server error log, then search for this message in the Matomo FAQ.
  4. If you do not find the answer in a FAQ, maybe it is a bug in Matomo. Search for the message in our issue tracker here.
  5. If you still have a problem and could not resolve it with those steps, please ask in the forums.