[28Feb2022 15:36:34.103] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.20, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
[28Feb2022 15:36:34.108] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 1.8.0_321 by Oracle Corporation
[28Feb2022 15:36:34.815] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[28Feb2022 15:36:34.880] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Minecraft/1.16.5/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=SERVER
[28Feb2022 15:36:36.983] [main/INFO] [STDERR/]: [org.antlr.v4.runtime.ConsoleErrorListener:syntaxError:38]: line 13:0 token recognition error at: '`'
[28Feb2022 15:36:37.158] [main/INFO] [STDERR/]: [org.antlr.v4.runtime.ConsoleErrorListener:syntaxError:38]: line 1:0 token recognition error at: '~'
[28Feb2022 15:36:38.852] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: java.lang.NoSuchMethodError: sun.security.util.ManifestEntryVerifier.<init>(Ljava/util/jar/Manifest;)V
[28Feb2022 15:36:38.858] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.SecureJarHandler.createCodeSource(SecureJarHandler.java:66)
[28Feb2022 15:36:38.877] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:275)
[28Feb2022 15:36:38.881] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136)
[28Feb2022 15:36:38.890] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98)
[28Feb2022 15:36:38.892] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[28Feb2022 15:36:38.895] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.Class.forName0(Native Method)
[28Feb2022 15:36:38.898] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.Class.forName(Unknown Source)
[28Feb2022 15:36:38.919] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.service.modlauncher.ModLauncherClassProvider.findClass(ModLauncherClassProvider.java:67)
[28Feb2022 15:36:38.932] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.platform.MixinConnectorManager.loadConnectors(MixinConnectorManager.java:70)
[28Feb2022 15:36:38.936] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.platform.MixinConnectorManager.inject(MixinConnectorManager.java:59)
[28Feb2022 15:36:38.942] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.platform.MixinPlatformManager.inject(MixinPlatformManager.java:196)
[28Feb2022 15:36:38.945] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.MixinBootstrap.inject(MixinBootstrap.java:202)
[28Feb2022 15:36:38.947] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.initializeLaunch(MixinLaunchPluginLegacy.java:201)
[28Feb2022 15:36:38.952] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.initializeLaunch(MixinLaunchPluginLegacy.java:195)
[28Feb2022 15:36:38.963] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.LaunchPluginHandler.lambda$announceLaunch$9(LaunchPluginHandler.java:97)
[28Feb2022 15:36:38.966] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.util.HashMap.forEach(Unknown Source)
[28Feb2022 15:36:38.968] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.LaunchPluginHandler.announceLaunch(LaunchPluginHandler.java:97)
[28Feb2022 15:36:38.970] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:52)
[28Feb2022 15:36:38.981] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
[28Feb2022 15:36:39.029] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.Launcher.run(Launcher.java:82)
[28Feb2022 15:36:39.067] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[28Feb2022 15:36:39.078] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)
[28Feb2022 15:36:39.101] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)
[28Feb2022 15:36:39.161] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)
It used to work. tried updating Forge to the latest reccommended for 1.16.5 but it didn't work. I must say I only start the server sometimes when someone comes over.
Java= java version 1.8.0_321
Platform Windows
Forge version: forge-1.16.5-36.1.62 and forge-1.16.5-36.2.20
