PHP Error Solved: Notice: Undefined index: roll in C:\xampp\htdocs - YouTube
Change location of htdocs with XAMPP : AbsoluteWillyNilly
file_put_contents(C:\xampp\htdocs\exam_system\storage\framework/sessions/FF): failed to open stream: No such file or directory => Soled this Error - scmGalaxy
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After submit: PHP Fatal error: Class not found in C:\xampp\htdocs\ - Stack Overflow