Hello, Vipul Garg,
We regret to inform you that we are unable to upload the video to your media library ( https://prnt.sc/SqHv-jvp5HPI ).
This issue is not related to our theme, and we suggest that you go to the Media section, find the video, click on it ( https://prnt.sc/cpJiHyBOXQ6D ), and check the URL ( https://prnt.sc/drtq1ut3CfuS ). It appears that the video is not loaded locally, and for this reason, we suggest that you upload it to YouTube or Vimeo and set the iframe code for the product ( https://prnt.sc/nCLT0q9aG_zy ).
We hope this information is helpful.
Kind Regards,
8theme team