Hello,
I built a 5x5x3 biggerreactors reactor that works ( when I say works it's that it produces energy by injecting uranium ). But the problem is that when I right click on the Reactor Access Port, there is an error message in the chat marked "An unknown multiblock error has occurred, report to mod author". The problem is that suddenly, I can not take out the waste. But on the small basic reactor I had no problem.

I am the latest version of ATM 7 in 1.18.1 on server. Bigreactor version is biggerreactors-1.18.1-0.6.0-beta.0.1 and Phosphophyllite version is phosphophyllite-1.18.1-0.6.0-beta.0.1.

Picture of the reactor :

Strangely after 5 days as well as some server restart the problem is solved. However, I haven't touched anything x).