Schema Mismatch Error
The instance keeps restarting due to a server shutdown displaying a schema mismatch error.
As the error message in the server logs suggests, your Appsmith instance has missed a required checkpoint upgrade. This occurs if you are manually upgrading and have skipped a version or are on an automatic upgrade but your instance hasn't checked for updates for a particular period.
To resolve this error, you must upgrade to the checkpoint version, in this case,