Upgraded to 2.14 various errors

Hi, I upgraded to 2.14 from 2.13.1 and now have the following errors:

WARNING: E:\PIWIK\Website\plugins\UserLanguage\Visitor.php(24): Notice - Undefined index: location_browser_lang - Piwik 2.14.0 - Please report this message in the Piwik forums: http://forum.piwik.org (please do a search first as it might have been reported already)

Visit Overview: Oops… there was a problem during the request. Maybe the server had a temporary issue, or maybe you requested a report with too much data. Please try again. If this error occurs repeatedly please contact your Piwik administrator for assistance.

SQLSTATE[42S22]: Column not found: 1054 Unknown column ‘log_visit.location_browser_lang’ in ‘field list’

Also on the visitor log alot of images/icons are white and hovering over shows ‘unknown’

Is there a way to rollback the database or address these issues? Install was fine with no issues reported

Hi there,

please see the bug report with link to workaround / solution: Column not found: 1054 Unknown column 'log_visit.location_browser_lang' in 'field list'" · Issue #8304 · matomo-org/piwik · GitHub

Thanks Matt, I see several links in the post you mention. Which is the fix? Thanks