Action 'index' not found in the module 'CustomVariables'

After the last updates i get the error below when I click on Custom Variables:

Action ‘index’ not found in the module ‘CustomVariables’.

Piwik is updated to the latest version, still getting this error.

Any idea on how to fix this?

please try latest Piwik beta: I would like to test early beta and RC releases, how do I enable automatic updates to use these development versions? - Analytics Platform - Matomo
where this bug should be fixed

I have the same issue, updated to the latest beta version but the same error appears.

I managed to solve the problem

  1. Updated to the latest version 2.9.1
  2. I replaced index with getCustomVariables within CustomVariables/Menu.php (more info here )
  3. Deleted the tmp/cache folder
  4. Disabled and re-enabled the Custom Variables plugin.

The error has gone away, seems to be working.

Same bug here, the temporary fix from sinaps worked for me. Thanks for that!