Internal Server Error while accessing cPanel, WHM & webmail

When accessing cPanel, WHM & webmail at times you get a error as below. Performing upcp OR performing a startup command (/usr/local/cpanel/startup) does not helps.

Internal Server Error
500
No response from subprocess (whostmgr (cpanel)) with exit signal: 0
cpsrvd/11.34.0.9 Server at server.milesweb.com

OR

Internal Server Error
500
No response from subprocess ((webmail (cpanel)) with exit signal: 0
cpsrvd/11.34.0.9 Server at server.milesweb.com

What you just need to do is restart cPanel on the server with command below. This will fix the errors you receive in cPanel, WHM & webmail.

service cpanel restart

OR

/etc/init.d/cpanel restart

If you face any issues with accessing it, contact our support team. They will assist you further.