Fails to start after latest upgrade or dist upgrade

[zmonge]

Describe the bug Watcher fails to install after installing the last update, or upgrading from Debian Buster to Bullseye

To Reproduce Steps to reproduce the behavior:

1. Accept update from Watcher main page
2. Wait for update to install & Watcher restart
3. Watcher page fails to load
4. Starting from console, gives the following error:

pi:/opt/Watcher3 $ python3 watcher.py Connected to database sqlite:////opt/Watcher3/userdata/watcher.sqlite SQL Database Query: ['PRAGMA user_version']. Traceback (most recent call last): File "/opt/Watcher3/core/sqldb.py", line 173, in execute return self.engine.execute(*command) AttributeError: 'Engine' object has no attribute 'execute' SQL Databse Query: ['PRAGMA user_version']. Traceback (most recent call last): File "/opt/Watcher3/core/sqldb.py", line 173, in execute return self.engine.execute(*command) AttributeError: 'Engine' object has no attribute 'execute' Traceback (most recent call last): File "/opt/Watcher3/watcher.py", line 90, in core.sql.update_database() File "/opt/Watcher3/core/sqldb.py", line 886, in update_database v = self.version() File "/opt/Watcher3/core/sqldb.py", line 873, in version return self.execute(['PRAGMA user_version']).fetchone()[0] AttributeError: 'NoneType' object has no attribute 'fetchone'

Expected behavior Watcher starts successfully after update.

Additional context Raspberry pi 3B+ Debian 11 Bullseye 6.1.14-v7+ #1633 SMP Thu Mar 2 11:02:03 GMT 2023 armv7l