Site opening 500 error or blank page: Operation not permitted in Unknown on line 0

Symptoms

• After migrating or renaming a domain, WordPress website is not accessible with 500 error or a white page

• The following error is shown in domain logs at Domains > example.com > Logs:

  AH01071: Got error 'PHP message: PHP Warning: Unknown: open_basedir restriction in effect. File(/var/www/vhosts/example2.com/httpdocs/wordfence-waf.php) is not within the allowed path(s): (/var/www/vhosts/example.com/:/tmp/) in Unknown on line 0PHP message: PHP Warning: Unknown: failed to open stream: Operation not permitted in Unknown on line 0PHP message: PHP Fatal error: Unknown: Failed opening required '/var/www/vhosts/example2.com/httpdocs/wordfence-waf.php' (include_path='.:/opt/plesk/php/7.4/share/pear') in Unknown on line 0'

Cause

Wordfence plugin configuration was not migrated properly.

Resolution