Update went well, all seems working but get a warning on top of each page

Warning:  Declaration of BxForumModule::serviceGetSearchableFields() should be compatible with BxBaseModGeneralModule::serviceGetSearchableFields($aInputsAdd = Array) in /var/www/vhosts/tld.com/httpdocs/2.0/modules/boonex/forum/classes/BxForumModule.php on line 0