Hi Kapil,
It’s a recurrent problem, I believe.
Check the existing posts How to recover from Database Spawn error
Once I’m not sure there are no remnants of a failing run (ps -ax | grep "supervisord") I tend to do this:
- stop cryosparc
- copy the database folder onto another folder (something like
cp -rav cryosparc2_database cryosparc_database_backup) - remove the original folder
rm -rf cryosparc2_database - start cryosparc --> this will recreate the database
- stop cryosparc, do
rsync cryosparc2_database_backup cryosparc2_database --delete-after --progress - start cryosparc again
After that I have my database back. Of course, no warranties 
Best,
Juan