[12:06:16 ERROR]: Could not load 'plugins\AutoCraft 1.0.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: de/raffi/autocraft/main/AutoCraft has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [server.jar:git-Spigot-79a30d7-f4830a1]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [server.jar:git-Spigot-79a30d7-f4830a1]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [server.jar:git-Spigot-79a30d7-f4830a1]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_341]
Caused by: java.lang.UnsupportedClassVersionError: de/raffi/autocraft/main/AutoCraft has been compiled by a more recent version of the Java Runtime (class file version 61.0), 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_341]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_341]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_341]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:148) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_341]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_341]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_341]
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_341]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[server.jar:git-Spigot-79a30d7-f4830a1]
... 6 more
[12:06:16 ERROR]: Could not load 'plugins\CommandsChecking-1.1.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/baraban4ik/commandschecking/CommandsChecking has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [server.jar:git-Spigot-79a30d7-f4830a1]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [server.jar:git-Spigot-79a30d7-f4830a1]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [server.jar:git-Spigot-79a30d7-f4830a1]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_341]
Caused by: java.lang.UnsupportedClassVersionError: me/baraban4ik/commandschecking/CommandsChecking has been compiled by a more recent version of the Java Runtime (class file version 53.0), 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_341]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_341]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_341]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:148) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_341]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_341]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_341]
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_341]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[server.jar:git-Spigot-79a30d7-f4830a1]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[server.jar:git-Spigot-79a30d7-f4830a1]
... 6 more

Amazing plugin! This plugin is free and yet still 100% working. Keep up the good work ^^