Done Glitched Base (Forever Stranded)

I've been having a problem with my base for the last couple weeks with logging into my base on the Forever Stranded modpack.

It started when I was holding a chemical thrower (which had lava in it), and the moment I right-clicked on it, I was "kicked to a fallback server." Upon re-logging in, I am on the server for a second before being kicked again.

I have had helpers send me to spawn to test, and the same happens. I have also tried removing the chemical thrower from my inventory before entering my base, and the problem still occurs.

I do not remember my coordinates, but I do remember what is at my base. Looking forward to helping if needed!