I cant join my mohist server

i cant join my mohist server

pls help me

and it keeps crashing when i start it up

i removed all mods and just added 1 mod and than it works but if i add more mods it keeps crashing

or if it wont crash it says disconnected the hole time i try to join

now it says the hole time (failed to synchronize registry data from server minecraft)

it wont even work if i only install 1 mod