Automatically upgraded to 2.14.0. No error reported during app and database upgrade.
New Dashboard shows SQLSTATE[42S22]: Column not found: 1054 Unknown column ‘log_visit.location_browser_lang’ in ‘field list’" in Keywords, Visits Over Time, Search Engines, Referrer Websites, Operating System versions widgets, and “There is no data for this report” in Visitor Map widget. The browser and OS icons shows white squares next to a working flag under Visitors in Real-time widget. The SEO Rakings widget is the only one not showing any apparent error.
If set to 1 day, Visitors > Overview shows many lines of [i]“WARNING: /[path]/htdocs/piwik/plugins/UserLanguage/Visitor.php(29): Notice - Undefined index: location_browser_lang - Piwik 2.14.0…”[i], also “config_browser_version” and “config_os”.
All under one long red text error of [i]“ERROR: Failed to get data from API: SQLSTATE[42S22]: Column not found: 1054 Unknown column ‘log_visit.location_browser_lang’ in ‘field list’ #0 /[path]/piwik/libs/Zend/Db/Statement.php(300): Zend_Db_Statement_Pdo->_execute(Array) #1 /[path]/piwik/libs/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array) #2 /[path]/piwik/libs/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query(’\n\t\t\tSELECT\n\t\t\t\t…’, Array)…[snip]”
If set to longer periods, Visitors > Overview shows “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.”
Visitors > Visitor Log shows working list other than blank OS and browser icons. Hovering over those shows unknown OS and browser but browser engines are still identified.
Virtually all other pages show "SQLSTATE[42S22]: Column not found: 1054 Unknown column ‘log_visit.location_browser_lang’ in ‘field list’ " errors.
I don’t think Piwik is tracking any view visits.
Did not manually backup database prior to upgrade.