Maubot 0.2.0 + Encryption fails to start

[H4Mm3r]

Hi,

Maubot was working, but after pip install --upgrade maubot[e2be], this happen :

[2022-01-03 18:41:51,218] [INFO@mau.init] Initializing maubot 0.2.0
[2022-01-03 18:41:51,218] [DEBUG@maubot.instance.zip] Preloading plugins...
[2022-01-03 18:41:51,251] [CRITICAL@mau.init] Unexpected error in initialization
Traceback (most recent call last):
File "/opt/matrix-bots/maubot/lib/python3.9/site-packages/mautrix/util/program.py", line 93, in _prepare
self.prepare()
File "/opt/matrix-bots/maubot/lib/python3.9/site-packages/maubot/main.py", line 55, in prepare
clients = init_client_class(self.config, self.loop)
File "/opt/matrix-bots/maubot/lib/python3.9/site-packages/maubot/client.py", line 449, in init
Client.crypto_db = AsyncDatabase.create(db_url, upgrade_table=PgCryptoStore.upgrade_table)
AttributeError: 'NoneType' object has no attribute 'upgrade_table'

[le-firehawk]

Haven't found a solution, but did look into the code briefly. From a functional Maubot 0.2.0 instance, the lib/.../client.py is identical to the non-function Encrypted instance (SHA 256 hash 2316cb0c844b1cacfe2ee5aac19ea457c9a55be3ba6418db268d7bfd53f30e15 verified).

Considering the error message, PgCryptoStore is the issue. This variable is created on line 34 of client.py:
'from mautrix.crypto import OlmMachine, StateStore as CryptoStateStore, PgCryptoStore'

I then entered a Python3.9 instance and ran this command, and indeed PgCryptoStore did become None

It seems that a couple of modules in the mautrix package are not loading properly, namely PgCryptoStore and PgCryptoStateStore

Operating on a hunch, I copied the old mautrix library to the directory running Maubot with encryption (note: this is not a solution)

Now, when running 'python3 -m maubot', a new error appears

Hope this helps someone identify a solution

[tulir]

Looks like I just forgot to move asyncpg to the non-optional requirements, so installing that will fix it

[le-firehawk]

Thanks for that. Yes I actually just caught onto that, was gonna comment the issue was asyncpg as I discovered by following the import calls from mautrix to this point.

Appreciate your efforts tulir. As a python guy myself, I know how difficult debugging can be at times

[H4Mm3r]

pip install asyncpg fix the problem, thank you guys, best wishes !