Board Thread:General Mod Discussion/@comment-2601:147:C003:BEE0:C157:746:43F4:12A0-20200112235653/@comment-26222246-20200113084216

Did some digging for an answer

Maybe try using NBT edit. It seems to be an external application that allows you to edit your save files in more advanced ways. I would recommend backing up your world first:

https://www.curseforge.com/minecraft/mc-mods/nbtedit/files
 * 1) Using NBTEdit, open your save file (%AppData%/.minecraft/saves//save.dat)
 * 2) Change the NBT node AllowCommands from 0 to 1.
 * 3) Save and reopen the world.