When trying to start a server it crashes on initial load, it seems to have conflicts with Roadrunner, in the latest version of both mods. Here I show an image that comes out before the server crashes.

I'm not sure if it's another mod, but in testing mods of yours like Goal Optimizer and this one, they conflict with Roadrunner.

I will ensure roadrunner compatibility in the next version but I just don't recommend using it because it is heavily out dated and has a lot of tiny incompatibility problems with other content mods. (Actually, when I removed it from my performance pack, my max fps went up to 500 from 300. This is only my own situation and maybe for others it's not bad, though)
Btw, asek has a plan to port Radium to 1165, which can be expected as LTS.

Sure, here it is.
Server log:
latest.log

Client log:
latest.log

https://legacy.curseforge.com/minecraft/mc-mods/redirectionor/files/4607078
Just released, this version is fully compatible with roadrunner.

Goal Optimizer is compatible with roadrunner too.

With the new update of Redirectionor, there's another error in the server or the same one (I'm not sure) and for client it keeps freezing on the loading screen.

Server log (With Roadrunner):
latest (1).log

Client log: (Without Roadrunner):
latest.log

How about 1.0.1? https://legacy.curseforge.com/minecraft/mc-mods/redirectionor/files/4607693

In the Client side it works, but in the Server side it still crashes.
(Server side with Roadrunner)
latest.log

should be fully fixed in 1.1.0, thanks to your report!