Erroe with immersive railroading 1.12.2 , Trains won't render, help.

RTM is known to break a ton of things. That mod runs incredibly unstable, i wouldn't really use it outside of some just-for-fun-goofing-around-stuff.
Basically, don't expect other things to behave as usual as long as RTM is installed.

.we need screeenshots and a log

debug.log
latest.log

Do you have a screenshot of the issue ingame?

no

i have video, but not screenshot

that works

ok

won't let me send .mkv files so here's a google drive link: https://drive.google.com/file/d/1dw6urHkQe1NjwKCsxtTZT1AObJt14Pji/view?usp=sharing

There's sometimes an issue with IR and RTM together, does it work without RTM?

tried to remove rtm. broke minecraft. :( . have to redownload minecraft.

I had the same issue except it was installing a mod before opening Minecraft. Basically, if you downloaded a mod before accessing the world all trains will disappear to fix just take out the mod and run the world. (Idk if this is your problem but it might work)

also what is RTM

i have that problem to ☹

This will be closed. i have fixed it. just that some mods weren't compatible with immersive railroading