Github issue: array to string conversion in 2.14.0 in 3 places · Issue #8268 · matomo-org/piwik · GitHub
There seems to happen array to string conversions in 4 places in Piwik 2.13.1:
WARNING: /srv/www/htdocs/piwik/core/Plugin/Report.php(792): Warning - ucfirst() expects parameter 1 to be string, array given - Piwik 2.13.1
WARNING: /srv/www/htdocs/piwik/core/Http/ControllerResolver.php(133): Warning - substr() expects parameter 1 to be string, array given - Piwik 2.13.1
WARNING: /srv/www/htdocs/piwik/core/Http/ControllerResolver.php(64): Notice - Array to string conversion - Piwik 2.13.1
WARNING: /srv/www/htdocs/piwik/libs/HTML/Common2.php(251): Notice - Array to string conversion - Piwik 2.13.1
Greetings
mkuhn