When tried to remove the domain from Plesk Control Panel, the following error message is occurred:
Error: Unable to remove domains: Problems occured while removing domains: Unable to remove hosting: Unable to delete system user: SysUser->systemRemove() failed: usermng failed: Empty input path: (87) The parameter is incorrect.
Local path parameter for FTP user of this domain is missed.
Please, go to Computer Management > Local Users and Groups > Users > select FTP user for this domain > go to Properties > Profile > check if Local path parameter is specified there.
If not, please, specify proper path to this domain directory