Jubeat Prop: TypeError: object of type 'NoneType' has no len()

[ivan3612]

After New Card registered, services provided such error in response of get_mdata

192.168.0.90 - - [16/Sep/2024 16:35:25] "POST /?model=L44:J:C:A:2016031700&module=gametop&method=get_mdata HTTP/1.1" 200 -
Received request:


0


31074902
<mdata_ver __type="s8">2</mdata_ver>
false

Traceback (most recent call last):
File "E:\Jubeat\bemaniutils-trunk\bemani\utils\services.py", line 65, in receive_request
resp = dispatch.handle(req)
^^^^^^^^^^^^^^^^^^^^
File "E:\Jubeat\bemaniutils-trunk\bemani\backend\dispatch.py", line 150, in handle
response = handler(request)
^^^^^^^^^^^^^^^^
File "E:\Jubeat\bemaniutils-trunk\bemani\backend\jubeat\prop.py", line 612, in handle_gametop_get_mdata_request
root = self.get_scores_by_extid(extid, mdata_ver, 3)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "E:\Jubeat\bemaniutils-trunk\bemani\backend\jubeat\base.py", line 182, in get_scores_by_extid
if len(scores) < 50:
^^^^^^^^^^^
TypeError: object of type 'NoneType' has no len()

[DragonMinded]

Oh, interesting, I see what's going on here. I can attempt to fix this tonight but I might forget.

[ivan3612]

Thank you
I should also mention that the database is newly built and without any data inside

[DragonMinded]

On further inspection, this seems like it shouldn't be a problem, because we always set the cache properly on first iteration. Is your instance perhaps not configured for memcached OR a file cache? I think in that case, flask would just do an in-memory instance and I have no idea what happens between loops.

I can still patch so it doesn't crash, but I think your setup might be a bit wonky.

[DragonMinded]

Alternatively, it could be more than 60 seconds between requests, which is the lifetime of the cache. Unlikely, but a possibility.

[DragonMinded]

Give 253dd52 a try. It should at least stop crashes, but I still suspect something is up with your setup.