Shelly Manager throws exception

Starting the shelly manager on my OH3.4.0 system throws an exception:

Exception:java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
Check openHAB.log for details.

openhab.log does not show anything.
Any idea what could cause this?

There are 37 different shelly things installed, non is offline.

I have the same issue with OH3.4.4 where you able to fix this issue?

No, still the same