And then the server does not start with the message
Caused by: java.io.FileNotFoundException: class path resource [org.biooffice.bio4/keystore/localhost.jks] cannot be resolved to URL because it does not exist
The <base-package> in the path to the keystore (server.ssl.key-store property) should be presented as a slash-separated path: server.ssl.key-store = classpath:org/biooffice/bio4/keystore/localhost.jks