On my /wp-admin/ page I get this error:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'mytheme_admin_bar_render' not found or invalid function name in /home/rgomme1q/public_html/geoffrey/wp-includes/plugin.php on line 406
And on my edit page I get this error:
Warning: Invalid argument supplied for foreach() in /home/rgomme1q/public_html/geoffrey/wp-content/plugins/dropdown-menu-widget/shailan.DropDownMenu.php on line 239
Apart from these errors, the site functions perfectly. Also the files mentioned are never touched by me and are in their original state. I guess the errors come from a typo in another file, but how do I determine which file is the culprit?