Server Error when upgrading to 1.11

Support & Bugs
1

I upgraded to 1.11 of piwik and I try sign in to my admin account and I receive this error:

Is there any way of fixing this error?

Eole

EDIT: I searched this problem on google and the results don’t seem to match my problem.

2

Check your error logs please.

3

EDIT: I tried reinstalling but its not working.

4

Please delete the UserLanguage plugin from the plugins folder (after deactivating it in the UI)