I have few villagers in my minecraft world but when i try to level up to level 3 my third cartographer everything stops working and i have to close the game but when i save and quit it keeps saving world indefinitely so i have to close it from the task manager.
PD: It only happens with new cartographers, it doesn't happen with other villagers
Linked issues
duplicates 1
Comments 4
I've just made another world and tried it in creative and if you try to level a cartographer to level 3 it happens the same, but it doesn't happen when you try with other types of villagers

Duplicate of your same report, MC-232098.

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If the issue is only reproducible in one world I'd suggest adding the world as an attachment. So that testing it is possible.