Cpanel domain name is not showing

Issue: Cpanel of the domain shows :
Welcome yourdomain.com!
[an error occurred while processing this directive] [an error occurred while processing this directive]

OR
The following error occurred while trying to add email account in the domain:
# /scripts/addpop test123@domainName password
Unable to open /var/cpanel/username: Permission denied at /usr/local/cpanel/Cpanel.pm line 152. Sorry, you do not have access to the domain domainName


Check whether any extra blank line line in the /var/cpanel/cpanel.config

Check the ownership of the file /var/cpanel/users/username
chown cpanel:username /var/cpanel/users/username

This will fix the issue.