> [22:53:17] [Server thread/ERROR]: Could not load 'plugins/MarsCraftPlugin-1.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/Fake_Name131/MarsCraft/Main has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:139) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:394) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:301) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.craftbukkit.v1_16_R1.CraftServer.loadPlugins(CraftServer.java:382) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.craftbukkit.v1_16_R1.CraftServer.reload(CraftServer.java:873) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.Bukkit.reload(Bukkit.java:642) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:27) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.craftbukkit.v1_16_R1.CraftServer.dispatchCommand(CraftServer.java:757) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.PlayerConnection.handleCommand(PlayerConnection.java:1703) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.PlayerConnection.a(PlayerConnection.java:1546) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.TickTask.run(SourceFile:18) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.IAsyncTaskHandler.executeTask(SourceFile:144) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.IAsyncTaskHandler.executeNext(SourceFile:118) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.MinecraftServer.aZ(MinecraftServer.java:943) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.MinecraftServer.executeNext(MinecraftServer.java:936) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.MinecraftServer.sleepForTick(MinecraftServer.java:920) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.MinecraftServer.v(MinecraftServer.java:852) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at net.minecraft.server.v1_16_R1.MinecraftServer.lambda$0(MinecraftServer.java:164) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: java.lang.UnsupportedClassVersionError: me/Fake_Name131/MarsCraft/Main has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_242]
at java.lang.ClassLoader.defineClass(ClassLoader.java:757) ~[?:1.8.0_242]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_242]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:163) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:96) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at java.lang.ClassLoader.loadClass(ClassLoader.java:419) ~[?:1.8.0_242]
at java.lang.ClassLoader.loadClass(ClassLoader.java:352) ~[?:1.8.0_242]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_242]
at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_242]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot.jar:git-Spigot-c3a49df-2f18108]
... 24 more