Not sure if you need more help for repro, but I also experienced this issue and placing down a space platform resolved the issue for me.

Here is my save if you want to see it in action (on a very simple spaceship): 20241021_SpaceAge01_default.zip .
(Just open the only space platform, and check the ...

I'm also experiencing this. I have read a tip elsewhere: try to place down a space platform somewhere, it fixed the issue for me. (2.0.14)

Today I tested it (version: 2.0.9), and efficiency modules do reduce pollution directly, not only power usage!
See this image:

I also experienced this issue in version 2.0.9.
I attached my logs as well, maybe they can help if you can't repro the issue.

I love Factorio mostly for how amazingly high quality it is.
In my opinion, for Factorio, QoL has higher priority than new features, so please keep QoL improvements coming! <3

Bug description:
PvP and Team production game modes' description text states that "This is a multiplayer-only scenario." , however this is not true since they can be played in single player as well.

The text is the same in both ways of creating such game so this bug applies to both "paths":
A ...

The same happened to me right now.
scenario_error.png

20078.324 Error MainLoop.cpp:1129: Exception at tick 4082377: The scenario level caused a non-recoverable error.
Please report this error to the scenario author.

Error while running event level::on_tick (ID 0)
__base__/lualib/compi.lua:97 ...