Exploring flying in a server and crash without possibility to re-enter without instant crshing

[xylucayxboom]

I was exploring in a server then crashed, when I tried to rejoin the server I could live for 2 seconds then crash again with the same error. crash-2021-06-08_18.05.05-client.txt

[CreepyCre]

As you don't seem to be using Cubic Chunks it might be better to just use the latest normal 1.12.2 version of Dimensional Doors. Having the bug fixed in the CC release will be difficult, since the currently active developers are working on the 1.17 fabric version.