Error starting synapse with systemd or python synctl

[thagoat]

Description

Error upon starting with systemd and synctl.
Error:
Error in configuration at 'a.p.p..s.e.r.v.i.c.e..c.o.n.f.i.g._.f.i.l.e.s':
Expected 'None' to be a list of AS config files:
Updated to 1.82.0
python version 3.11.3
Had the same error running in a docker container

Steps to reproduce

• list the steps
• that reproduce the bug
• using hyphens as bullet points

Homeserver

Synapse home server on my hardware

Synapse Version

1.82.0

Installation Method

Other (please mention below)

Database

SQLite

Workers

Single process

Platform

Archlinux, native install and docker container

Configuration

No response

Relevant log output

Error in configuration at 'a.p.p._.s.e.r.v.i.c.e._.c.o.n.f.i.g._.f.i.l.e.s':
Expected 'None' to be a list of AS config files:

Anything else that would be useful to know?

Had a massive python update from pacman and the error started after update

[wuetzchen]

Hello,

had a similar issue after upgrading, while my config was like

app_service_config_files:

<empty>

I received the same error message. As I am not using any app services, I simply uncommented this config line, works like a charm now with my Arch installation and packages

python 3.11.3-1
matrix-synapse 1.82.0-2

[maxkratz]

I had the same error after upgrading Synapse to v1.82.0 but I use Docker to run my Matrix stack. Commenting out the line as proposed by @wuetzchen worked for me. Thank you!

[thagoat]

Perfect! Thanks @maxkratz @wuetzchen
Worked like a charm! Looked through my config and missed that line at least 3 times 😂🤣

[clokep]

The error checking around this was tightened up a bit in #15425.