PHP Warning: File upload error - unable to create a temporary file in Unknown on line 0

Hi everyone. Im not using neither Wordpress nor WHM. I have only web hosting with cpanel and i up to this day i uploaded files via upload.php to hosting. But today i tried to clear hosting folders and after that upload becamed impossible. i have full permissions (777) for /tmp folder. can u help me with finding which file i deleted to restore it or create manually? thank you