[SCHWERWIEGEND] Task BungeeTask(sched=net.md_5.bungee.scheduler.BungeeScheduler@7075f914, id=3, owner=de.inventivegames.nickname.bungee.NickNamerBungee@6563068f, task=org.inventivetalent.update.bungee.BungeeUpdater@2de6a88d, delay=0, period=0, running=true) encountered an exception
java.lang.UnsupportedClassVersionError: org/json/JSONObject : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at net.md_5.bungee.api.plugin.PluginClassloader.loadClass0(PluginClassloader.java:34)
    at net.md_5.bungee.api.plugin.PluginClassloader.loadClass(PluginClassloader.java:27)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at org.inventivetalent.update.bungee.BungeeUpdater.run(BungeeUpdater.java:136)
    at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:63)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)