When running mvn spring-boot:help on a Spring Boot 2.3.0 project created with spring init fails with the error:

A required class is missing: org.springframework.boot.maven.HelpMojo

By backing down the version to 2.2.7.RELEASE, the command executes normally without error.

I've attached the log.

output.txt

Comment From: thorntonrp

Running the following command shows that HelpMojo.java is included in the plugin jar, but not HelpMojo.class:

$ jar tf ~/.m2/repository/org/springframework/boot/spring-boot-maven-plugin/2.3.0.RELEASE/spring-boot-maven-plugin-2.3.0.RELEASE.jar | grep HelpMojo

Output:

org/springframework/boot/maven/HelpMojo.java

Comment From: bclozel

I think this is a duplicate of #21556