sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: post

This error message is indicating that the table "post" does not exist in the database. Possible reasons for this error include:

1. The table was not created in the database.
2. The table was renamed or deleted.
3. The table was created in a different database than the one being accessed.

To resolve this error, you should check that the table has been created in the database and that the correct database is being accessed. If the table was renamed or deleted, you may need to recreate it or update the code to reference the correct table name.