NPE when trying to register a connector of an unknown type

[gunnarmorling]

Specified class isn't a valid connector type. The following connector type(s) are available:
java.lang.NullPointerException
	at org.kcctl.command.GetPluginsCommand.call(GetPluginsCommand.java:84)
	at org.kcctl.command.ApplyCommand.createOrUpdateConnector(ApplyCommand.java:200)
	at org.kcctl.command.ApplyCommand.applyOrValidateConnector(ApplyCommand.java:159)
	at org.kcctl.command.ApplyCommand.call(ApplyCommand.java:140)
	at org.kcctl.command.ApplyCommand.call(ApplyCommand.java:43)
	at picocli.CommandLine.executeUserObject(CommandLine.java:1953)
	at picocli.CommandLine.access$1300(CommandLine.java:145)
	at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2358)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2352)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2314)
	at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179)
	at picocli.CommandLine$RunLast.execute(CommandLine.java:2316)
	at io.quarkus.picocli.runtime.PicocliRunner$EventExecutionStrategy.execute(PicocliRunner.java:26)
	at picocli.CommandLine.execute(CommandLine.java:2078)
	at io.quarkus.picocli.runtime.PicocliRunner.run(PicocliRunner.java:40)
	at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:131)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:67)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:41)
	at io.quarkus.runner.GeneratedMain.main(Unknown Source)