[BUG] Unable to build

Created by: gtorrance-bw

While getting ready to submit another issue, I attempted to "test with the latest master" using the instructions listed here.

Building the project locally on my Mac (using ./mvnw clean install) failed.

While processing the "maven-javadoc-plugin:3.4.0:jar (attach-javadocs) @ openapi-generator-core" goal there were hundreds of Javadoc-related warnings, and the build then failed with the following:

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for openapi-generator-project 6.3.0-SNAPSHOT:
[INFO] 
[INFO] openapi-generator-project .......................... SUCCESS [ 43.259 s]
[INFO] openapi-generator-core ............................. FAILURE [ 16.585 s]
[INFO] openapi-generator (core library) ................... SKIPPED
[INFO] openapi-generator (executable) ..................... SKIPPED
[INFO] openapi-generator (maven-plugin) ................... SKIPPED
[INFO] openapi-generator-gradle-plugin (maven wrapper) .... SKIPPED
[INFO] openapi-generator-online ........................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:13 min
[INFO] Finished at: 2022-11-17T06:39:54-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.4.0:jar (attach-javadocs) on project openapi-generator-core: MavenReportException: Error while generating Javadoc: Project contains Javadoc Warnings -> [Help 1]

Steps to reproduce? I followed the instructions here under "Build the project locally" precisely. These steps should reproduce.