I just updated to (Piwik 1.8.2) - now i get this warning. Is it bad? Or how can I fix it?
PHP Version 5.3.3-7+squeeze8
json support enabled
json version 1.2.1
MySql 5.1.61
Warning: json_encode(): Invalid UTF-8 sequence in argument in /srv/www/webXXX/html/piwik/core/Common.php on line 1129
Backtrace -->
#0 Piwik_ErrorHandler(...) called at [:]#1 json_encode(...) called at [/srv/www/webXXX/html/piwik/core/Common.php:1129]#2
Piwik_Common::json_encode(...) called at [/srv/www/webXXX/html/piwik/plugins/Dashboard/Controller.php:24]#3
Piwik_Dashboard_Controller->getDashboardView(...) called at [/srv/www/webXXX/html/piwik/plugins/Dashboard/Controller.php:34]#4
Piwik_Dashboard_Controller->embeddedIndex(...) called at [:]#5 call_user_func_array(...) called at [/srv/www/webXXX/html/piwik/core/FrontController.php:138]#6 Piwik_FrontController->dispatch(...) called at [/srv/www/webXXX/html/piwik/index.php:53]