Symptoms
When tried to remove the domain from Plesk Control Panel, the following error message is occurred:
Error: Unable to remove domains: Problems occurred while removing
domains: ... PathSearchAndQualify failed for path
Cause
'Local path' parameter for IUSR_ftpuser of this domain is missed.
Resolution
Please, go to Computer Management, Local Users and Groups, Users, select IUSR_ftpuser for this domain, go to Properties, Profile and check if 'Local path' parameter is specified there.
If not, please, specify proper path to this domain directory %plesk_vhosts%\domain.tld.
Once it's done, please try to remove domain again.