There is a known issue with new installs of openhabian because the location of the ZULU Java JRE changed at AZUL. There are workarounds proposed until openhabian is fixed.
While this thread purports to be for Pi4, the problem also exist on other Pi model. [SOLVED] (Raspberry Pi 4) openHABian v1.5.0 Error w/ Installing Zulu Embedded OpenJDK