To start off im using epic game launcher so all my mods and stuff are local - I have already checked if all mods are compatible and up to date which they are

thats why i thought i may aswell ask under here since i got this error message when I installed 81 tiles

I cant seem to work out what this error message relates too, or if it is even caused by this mod

I am also not sure if it is possible to add 81 tiles onto an already existing map (which i did here)

here is my output file

https://www.dropbox.com/s/wzyudylljeeaifg/output_log.txt?dl=0