Debug.log:
[03Dec2020 19:24:08.098] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 35.1.0, --fml.mcpVersion, 20201102.104115, --fml.mcVersion, 1.16.4, --fml.forgeGroup, net.minecraftforge, -Xmx4096M, -Xms4096M, --nogui]
[03Dec2020 19:24:08.101] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.6+85+master.325de55 starting: java version 15.0.1 by Oracle Corporation
[03Dec2020 19:24:08.108] [main/DEBUG] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: F