Stopped working, 13th Age

[Cousken]

Hello!
I've successfully used Dungeon Moon once, but the second time i try to use it in the same installation, same world it fails for me. It becomes unresponsive after i select monster type, the combo box doesn't even close. The only clue as to what's going on i can get from the log is this:

`[Vue warn]: Duplicate keys detected: 'EAkaJFZZEiiLZUv0'. This may cause an update error.

found in

--->
vue.js:5062:23
VueJS 16
warn$2
checkDuplicateKeys
createChildren
createElm
updateChildren
patchVnode
updateChildren
patchVnode
patch
_update
updateComponent
get
run
flushSchedulerQueue
nextTick
flushCallbacks
`

I'm on Foundry V9 b269, Toolki13 1.20.0, Dungeon Moon 1.2.1