On restarting my gitea.service the working gitea stopped.
now it shows the error as shown -
[F] Migration Error: Your database (migration version: 284) is for a newer Gitea, you can not use the newer database for this old Gitea release (280).
Gitea will exit to keep your database safe and unchanged. Please use the correct Gitea release, do not change the migration version manually (incorrect manual operation may lose data).