This is related to this commit: https://github.com/jbossas/protean-shamrock/pull/1119/commits/98e8f1b8e4015e5c23acf843d143f9fd5d066068 ``` application classes: Build failure: Build failed due to errors [ERROR] [error]: Build step io.quarkus.resteasy.ResteasyScanningProcessor#registerProviders threw an exception: java.lang.NoClassDefFoundError: javax/json/spi/JsonProvider: javax.json.spi.JsonProvider ``` The issue is that javax.json 1.1.2 does NOT include the API classes whereas 1.1.4 does... 1.1.4 is set by quarkus-test-common in the Quarkus build whereas in the Rest HTTP demo, it's coming from RESTEasy and it's 1.1.2.