503 error on user websites caused by CageFS
![Fatal Error Unable to create lock file: Bad file descriptor (9) image 123 - Fatal Error Unable to create lock file: Bad file descriptor (9)](https://i0.wp.com/pcx3.com/wp-content/uploads/2022/04/image-123.png?resize=736%2C337&ssl=1)
Check the logs
tail /var/log/apache2/stderr.log
Fri Apr 29 12:32:02 2022 (95855): Fatal Error Unable to create lock file: Bad file descriptor (9)
![Fatal Error Unable to create lock file: Bad file descriptor (9) image 130 - Fatal Error Unable to create lock file: Bad file descriptor (9)](https://i0.wp.com/pcx3.com/wp-content/uploads/2022/04/image-130.png?resize=736%2C167&ssl=1)
To fix the issue follow this guide: Apache: Fatal Error Unable to create lock file: Bad file descriptor (9)
Disable CsageFS for that user:
/usr/sbin/cagefsctl --disable $username
and enable it back:
/usr/sbin/cagefsctl --enable $username