Hi @Aditya27787857x0h7 - Thanks for submitting your bug report. We need a few more details to try to help with the issue.
Please see, How do I write a bug report?
Where is your media and projects located?
I see this issue, If you close and reopen Premiere Pro does the media come back online?
I don't see this issue on windows which exact version of Premiere and After Effects are you using?
Sorry for the frustration.