Exception failed opening required

Hello, I have created a course using moodle. After entering into the course, Soon after click on Edit mode I got following error message. Exception failed opening required. I don't how to solve this problem. Can any one help me? I want to solve this problem using cpanel. moodle 4.0

cPanel Version	104.0 (build 10)
Apache Version	2.4.54
PHP Version	7.3.33
MySQL Version	10.3.31-MariaDB