blp/timeseries no longer seems to work with bloomberg or java

The below code loading tick data from bloomberg used to work, but seems to have broken in the last months. Any idea why this breaks? This seems to happen in both old relases (e.g. 2018) and new ones e.g. 2021

It has worked for years and years however.

K>> timeseries(blp,'CO1 COMDTY','2023-01-27')
Error using blp/timeseries (line 361)
Java exception occurred:
java.lang.ArrayIndexOutOfBoundsException: 0 >= 0

	at java.util.Vector.elementAt(Unknown Source)