Fix missing namespace in error handler
Fix missing namespace in error handler

jaapverloop/Slim,JoeBengalen/Slim,mnapoli/Slim,Sam-Burns/Slim,foxyantho/Slim,feryardiant/slim,slimphp/Slim,juliangut/Slim,iinux/Slim,samsonasik/Slim,opengeek/Slim,RealSelf/Slim,dopesong/Slim,akrabat/Slim,iinux/Slim,somjit2514/basic,designermonkey/Slim,AndrewCarterUK/Slim,iinux/Slim