Failed to initialize database. The script directory has multiple heads...merge the branches using alembic merge.

I got this message at startup after doing `git pull` and running
`./.venv/bin/python -m pip install -r requirements.txt`

```
[ERROR] Failed to initialize database. Please ensure you have installed the latest requirements. If the error persists, please report this as in future the database will be required: The script directory has multiple heads (due to branching).Please use get_heads(), or merge the branches using alembic merge.
```

The fix was to do an alembic merge. But I don't expect anyone to know what that means. Because I don't know what that means. But it seems to squash the error after doing this:

`alembic merge heads`

Maybe fix the runner so it does something along these lines automatically.