Hi Brindhan,
The error is related to "Incomplete domain names in URL". The FQDN is not configured properly for web dynpro applications.
Fully qualified domain names should be given for webdynpro URL.
Please refer the below link for more details
Fully Qualified Domain Names (FQDN) (SAP Library - Web Dynpro ABAP Configuration)
Please take the basis team assistance to fix this issue.
Hope this helps you.
Regards,
Rama