A critical minecraft bug

[JakeIsAGreat]

on the PO3 server, I made a multi-block structure from immersive petroleum (an oil pumping pump). after a while, my friend and I were constantly kicked off the server because of this structure. we started to break it down. and we couldn't destroy it completely. throws us off the server and throws an error with this mod + a random mod (constantly different). over time, we were able to fly away and realized that if we look at some block in this area, we get an error. and we were able to put the structure in a box of blocks. now we are being deleted from the server even when we are not looking in that direction. Please help me solve this problem because it is unpleasant to play. remove what is in the box on the island, or in some other way help solve this problem. My native language is not English. I'm sorry if it's unclear. my nickname is Jake_IsAGreat . my teammate's nickname is Xukka_ . thanks for the reply.