As far as I know, having conditional file requiers is not multiplayer safe.

I assume you mean the dependencies? I put them in mostly for easy use for people as those mods are the mods I have build my mod around, but if there are any issues with it I'll remove them.

no, having a require(file) that doesn't always happens.
AFAIK if the loaded files are different from you and the multiplayer server, and the mod versions is the same, it will tell you you have a version mismatch.

Ok, I'll have a look if I can remove them, but I use them to load certain parts of the mod based on settings and other loaded mods, so removing them would take a bit of time.

move the conditions onto the interior of the files.
So that the files still get loaded, but just don't do anything if the conditions aren't met.

That's what I was thinking, didn't try it yet, but I'll do that, Thanks :)