@annkitaaggarwal Seems like the instance is corrupted/ instance was
terminated abnormally, You would probably need to create a fresh
crx-quickstart folder. you can use also make use of backup and restore,
proabably will be useful in such situations-
https://experienceleague.adobe.com/docs/experience-manager-64/administering/operations/backup-and-restore.html?lang=en
Hope this helps.