Forge 1.16 issues

[shinyone]

NOTE: I'm using Docker

Versions

Problem 1

Just started using MineOS and encountered some issues setting up a modded forge 1.16 server.

Incompatable Java version - Forge 1.16 only runs on Java8. Results in following error. (Not shown in logs)
[cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 16 by Oracle Corporation Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0x534df152) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0x534df152

There is no way in the UI to change the Java version. Problem also discussed here:
Solution: Manually update server.config file with path to java executable

[java]
java_binary=/usr/lib/jvm/java-8-openjdk-amd64/bin/java

@flareofghast Has improved the UI in this PR: #452

Problem 2

Forge 1.16 does not use unix_args/windows_args which 1.17+ versions do. Therefore, the run.sh/run.bat files do not work correctly. This results in the following error, which unfortunately does not appear in the log window, had to run.sh from shell.

Error: could not open 'libraries/net/minecraftforge/forge/1.16.5-36.2.35/unix_args.txt'

Solution: (not the best). Manually edited run.sh and remove the param requirements. Is there other solution?

java @user_jvm_args.txt -jar forge-1.16.5-36.2.34.jar

Neither of the solutions above allow for the profile to be changed. So once it's running don't change the versions...