admin panel error, cannot use admin panel because of error

This is error , there was a modification that possibly caused this. Error 403 You are not authorized to perform this action. Warning: require(/home/vpssharp/public_html/classifieds/protected/modules/Core/views/mails/[login to view URL]) [[login to view URL]]: failed to open stream: No such file or directory in /home/vpssharp/public_html/classifieds/[login to view URL] on line 120 Fatal error: require() [[login to view URL]]: Failed opening required '/home/vpssharp/public_html/classifieds/protected/modules/Core/views/mails/[login to view URL]' (include_path='.:/home/vpssharp/public_html/classifieds/protected/modules/Appearance/components:/home/vpssharp/public_html/classifieds/protected/modules/Appearance/models:/home/vpssharp/public_html/classifieds/protected/modules/Messaging/components:/home/vpssharp/public_html/classifieds/protected/modules/Messaging/models:/home/vpssharp/public_html/classifieds/protected/modules/Map/components:/home/vpssharp/public_html/classifieds/protected/modules/Map/models:/home/vpssharp/public_html/classifieds/protected/modules/Money/components:/home/vpssharp/public_html/classifieds/protected/modules/Money/models:/home/vpssharp/public_html/classifieds/protected/modules/User/components:/home/vpssharp/public_html/classifieds/protected/modules/User/models:/home/vpssharp/public_html/classifieds/protected/modules/Ads/components:/home/vpssharp/publ in /home/vpssharp/public_html/classifieds/[login to view URL] on line 120