Realm of Light IV - Stage 2 bug?

Hello I am new at the server and I have reached level 71... I am trying to do the quest Realm of light IV but I am stuck at the stage where it says to read the inscription at the bottom of the big tree. I think I disconnected when this happened and there isnt any inscription and Lari is not even here anymore.. Is there a way to fix this? and If so how? I have tried /class and reconnecting to the server but neither work. I am on version 1.12.2 if it matters in any way.