Suddenly unable to access openHAB

[WeRo (Welf)]

Worked for me too:

Apt upgrade, now [ERROR] [ternal.service.BootFeaturesInstaller] - Error installing boot features

My weekly update script let me jump into this mess too. But sudo apt-get install openhab=3.4.4-2 sudo apt-get install openhab-addons=3.4.4-2 worked for me.