Hello @sibasundarsahoo 

Go to the UI Builder and the corresponding workspace, in this case, the workspace with URL path 

Open the workspace configuration. You should be able to see a list of it's Pages and Variants.

Search for the page having issue, in this case, /record from the URL

Check the pages under it and make sure it is active, in this case, Record Default was inactive

Click on Settings and check Active

Please refer below article:

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1308082

Please mark the answer as helpful and correct if helped. 

Kind Regards,

Ravi Chandra