I too believe it was my "preceti music experiment" mod the culprit, uploaded a fix ( 2.0.2) i am quite curious as to why it wouldn't show and instead show rampantfixed, i searched a bit :
The part that was i think responsible for the error was that my mod wrongly tried to attach music to planet that are not there without space age, it creates an error on its own, but it doesn't say my mod's name, it doesn't say any mod is causing the error.
When rampantfixed is present, it says the error comes from rampantfixed, but if instead krastorio 2 was used, it would say the error comes from Krastorio2 ( and so on) so i guess there's nothing wrong with rampantfixed.