Getting weird screen when trying to join my Randomly Adding Anything mod server

I am trying to use the mod Randomly Adding Anything on my server, and i believe that i have done everything correctly, but i keep getting this when i try to log on. I don't know what is happening, any help is much appreciated.

i am using the 1.15 version of this mod btw

file name:

raa-2.1.2build.580.jar

ok, here is the log: https://mclo.gs/59YDCf7

it does show up as fully online tho