I updated to the latest build for blueprint in a custom modpack, there seems to be an incompatibility with both mods: https://www.curseforge.com/minecraft/mc-mods/the-bumblezone-forge
https://www.curseforge.com/minecraft/mc-mods/dimensional-dungeons
Tested a couple times in various combinations and this is the crash report it gives me every time:
crash-2022-02-09_23.42.38-server.txt

A fix for this will get released tomorrow.