I would like to execute this using Java 8. about ignite

[Cecer]

I've done a little digging and it appears that this is caused by JDA-8152174.

While not really a solution, I was able to work around this issue with a custom build where I removed the NonNull annotations from the constructor parameters of space.vectrix.ignite.launch.IgnitePlatform.

  @Inject
  public IgnitePlatform(final /*@NonNull*/ @ConfigPath(shared = true) Path configs,
                        final /*@NonNull*/ @ModsPath Path mods) {

[vectrixdevelops]

Fixed in 63d5506 you can download the latest version here https://github.com/vectrix-space/ignite/releases/tag/v0.8.1 .