org.bukkit.plugin.InvalidPluginException

tip

This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default. You might upgrade java or use an older version of SonarQube.

tip

If you're using intellij plugin of sonarqube, you might have to set the JAVA_HOME ambient variable manually.

tip

Update "latest" to Java 8 on DockerHub.

tip

You're using an older version of java with classes compiled for java7

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

  • GitHub comment 3#166158348
    via GitHub by LeonP-S
    ,
  • Plugin not loading.
    via GitHub by yetshadow
    ,
  • GitHub comment 4#167602968
    via GitHub by Ser3196
    ,
  • GitHub comment 239#171427122
    via GitHub by Block-Build
    ,
  • GitHub comment 98#240175727
    via GitHub by TheKingCreepy
    ,
    • org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: org/signs/skywars/api/Start : Unsupported major.minor version 52.0 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at java.lang.Thread.run(Thread.java:745)[?:1.7.0_79] Caused by: java.lang.UnsupportedClassVersionError: org/signs/skywars/api/Start : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method)[?:1.7.0_79] at java.lang.ClassLoader.defineClass(ClassLoader.java:800)[?:1.7.0_79] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)[?:1.7.0_79] at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)[?:1.7.0_79] at java.net.URLClassLoader.access$100(URLClassLoader.java:71)[?:1.7.0_79] at java.net.URLClassLoader$1.run(URLClassLoader.java:361)[?:1.7.0_79] at java.net.URLClassLoader$1.run(URLClassLoader.java:355)[?:1.7.0_79] at java.security.AccessController.doPrivileged(Native Method)[?:1.7.0_79] at java.net.URLClassLoader.findClass(URLClassLoader.java:354)[?:1.7.0_79] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at java.lang.ClassLoader.loadClass(ClassLoader.java:425)[?:1.7.0_79] at java.lang.ClassLoader.loadClass(ClassLoader.java:358)[?:1.7.0_79] at java.lang.Class.forName0(Native Method)[?:1.7.0_79] at java.lang.Class.forName(Class.java:274)[?:1.7.0_79] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64)[spigot.jar:git-Spigot-e4d4710-e1ebe52] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131)[spigot.jar:git-Spigot-e4d4710-e1ebe52] ... 6 more

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