Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

  1. ,
    Expert tip

    The server rejects all jars that already belong to the server runtime (such as tomcat-**.jar, servlet**.jar). Consider substituting the CORS filter you're using for this one: https://goo.gl/ctQ7Fs

  2. ,

    This is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. If you are using a Java version less than 8, upgrade because java.util.Base64 only comes with > Java 8.

Solutions on the web

via GitHub by slugdude
, 1 year ago
Cannot find main class `protocolsupport.ProtocolSupport'
via GitHub by BlendyCat
, 1 year ago
Cannot find main class `com.blendycat.mywarps.Main'
via GitHub by jamezrin
, 10 months ago
Cannot find main class `me.jaime29010.combatactionbar.Main'
via GitHub by GlennGeenen
, 2 years ago
Cannot find main class `net.walterhiggins.scriptcraft.ScriptCraftPlugin'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `protocolsupport.ProtocolSupport' at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:66)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at org.bukkit.craftbukkit.v1_10_R1.CraftServer.loadPlugins(CraftServer.java:297)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at net.minecraft.server.v1_10_R1.DedicatedServer.init(DedicatedServer.java:203)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:535)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at java.lang.Thread.run(Thread.java:745)[?:1.7.0_101]Caused by: java.lang.ClassNotFoundException: protocolsupport.ProtocolSupport at java.net.URLClassLoader$1.run(URLClassLoader.java:366)[?:1.7.0_101] at java.net.URLClassLoader$1.run(URLClassLoader.java:355)[?:1.7.0_101] at java.security.AccessController.doPrivileged(Native Method)[?:1.7.0_101] at java.net.URLClassLoader.findClass(URLClassLoader.java:354)[?:1.7.0_101] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] at java.lang.ClassLoader.loadClass(ClassLoader.java:425)[?:1.7.0_101] at java.lang.ClassLoader.loadClass(ClassLoader.java:358)[?:1.7.0_101] at java.lang.Class.forName0(Native Method)[?:1.7.0_101] at java.lang.Class.forName(Class.java:278)[?:1.7.0_101] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64)[spigot-1.10.2.jar:git-Spigot-078e2f8-09f1a19] ... 7 more