Unexplained NullPointerException in JlinkTask when no main class is specified

[jgcodes2020]

Here's what came out of gradlew jlink --stacktrace

What happened?

I am building a native installer for this project. It's a simple analog clock. It runs fine in IntelliJ 2020.1.2. However, I noticed that the plugin throws a NullPointerException. I ended up solving the problem by specifying a main class.

How can it be fixed?

Use Objects.requireNonNull() and a simple error message.

[siordache]

Thanks for reporting this issue! Fixed in 2.21.2.