Resources in calendar app with Calendar_Resource_Management

Hi,
I have installed and activated the Calendar_Resource_Management from github into my NC hosted by webhoster.

My understanding is, I have to add available resources by php occ calendar-resource:xyz command.

I run in issues even I start to add one of the provided eamples as:

php occ calendar-resource:story:create 1 "2nd floor"

and get the failure:
Could not create entry: An exception occurred while executing a query: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (userid_nextcloud.oc_calresources_stories, CONSTRAINT FK_A7A2067F4D2A7E12 FOREIGN KEY (building_id) REFERENCES oc_calresources_buildings (id) ON DELETE CASCADE)

What do I miss here?

Many thanks for your help!

no one has an idea?