I recetly downloaded and installed latest opigno LMS. During installation I got an error Warning: Invalid argument supplied for foreach() in user_permission_get_modules() (line 3041 of /home/lnxuser1/public_html/opigno_lms-7.x-1.15/modules/user/user.module). I saw this error on the web-page and also on the status report after successful installtion. I ignored this and went ahead with content creation. But after every action, I keep getting other messages, most often repeated being: Notice: Undefined index: name in system_requirements() (line 34 of /home/lnxuser1/public_html/opigno_lms-7.x-1.15/modules/system/system.install) Is this normal or is there some issue during installation and how should I fix it? I have 644 as the permissions for some of the files. Should I change it to 755 and re-install?