Thanks a lot Masa. It has solved my issue. But SAP has suggested to upgrade the SAP UI version to 1.22.9 using SAP note 2068522.
Also, while accessing some controls like SimpleForm in theme designer, I am getting following error.
File test-resources/sap/ui/layout/SimpleForm.html not found.
I could see that files in my systembut they are empty. I tried to find on SCN but couldnt get anything. Is it related to some URL path issue?
Thanks once again for your help.
Regards,
Bhavin