Describe the bug
So,I was testing out the Immersive Railroading mod 1.12.2 on my minecraft server with many other mods.I wanted to add some more resource packs for IR so I could have more trains for it.When I try placing ANY resource pack trains(btw. resource packs are MatoiVanillaPack(IR) and UNU CivilPack(.jar file) ),it displays ВО-2 error(watch the screenshot)

Screenshots
If applicable, add screenshots to help explain your problem.

error BO-2: error of access to rolling stock

Same thing with MatoiVanillaPack

Modlist

Did you put the packs in config/immersiverailroading on the server?

I put them in config folder and now it works!Thank you