After trying to deactivate/reactivate all my plugins, I am now encountering a fatal error and my site http://www.monparispascher.com is down... Here is the error :
Fatal error: is_callable() [function.is-callable]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "SubCategoriesWidget" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /home/monpa809/public_html/wp-includes/widgets.php on line 633
Not really having any php knowledge, I am just totally lost with this message. Can anyone please help me figure out what's happening, so I can find back my website ?
Thank you very much for your much needed help :)