Large chunk detected!

Hello I recently updated my server to paper 1.14.4 and when i start my server, there is a thread saying large chunkd detected in /hub etc,
the problem is: it is my main world and i cannot connect to the server, my game crash, moreover, the coordonates indicate a chunk of void (my world is void every where but not the spawn) i will try to delete this region but i think it is going to corrupt the entire world… please help me
Thanks