Hi @Chhaya Mishra ,
Thank you for your time in sharing this solution.
Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others." I would make a brief summary of this thread, you could click the "Accept Answer" button for this summary, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks for your understanding!
Issue Symptom:
Whenever I am clicking on create a new site pages from Communication SharePoint site so that time one .wsp file is downloaded not able to create site pages.
Current status:
Go to the {tanentURL}/sites/{sitename}/SitePages/Forms/ByAuthor.aspx this page > click on Settings gear icon > Library settings > More Library Settings > in the content types click on Site pages > Advance settings > in the Document Template paste this URL /_layouts/15/CreateSitePage.aspx in place of Sprocket-1.2 (5).wsp.