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    jsp-api and servlet-api jars must NOT be deployed by your web app. They should be marked as provided but not deployed by your app.

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    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

Solutions on the web

via GitHub by ItzWalla
, 1 year ago
cn/nukkit/plugin/PluginBase
via GitHub by ItzWalla
, 1 year ago
cn/nukkit/plugin/PluginBase
via Stack Overflow by Eva
, 2 years ago
org/eclipse/ui/plugin/AbstractUIPlugin
via GitHub by nicost
, 1 year ago
org/micromanager/MenuPlugin in Thread[Plugin loading thread,6,main]
via GitHub by Zukeow
, 4 months ago
org/bukkit/plugin/java/JavaPlugin
java.lang.ClassNotFoundException: cn.nukkit.plugin.PluginBase	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)	at org.itxtech.nemisys.plugin.PluginClassLoader.findClass(PluginClassLoader.java:44)	at org.itxtech.nemisys.plugin.PluginClassLoader.findClass(PluginClassLoader.java:28)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)	at org.itxtech.nemisys.plugin.PluginClassLoader.findClass(PluginClassLoader.java:44)	at org.itxtech.nemisys.plugin.JavaPluginLoader.getClassByName(JavaPluginLoader.java:146)	at org.itxtech.nemisys.plugin.PluginClassLoader.findClass(PluginClassLoader.java:40)	at org.itxtech.nemisys.plugin.PluginClassLoader.findClass(PluginClassLoader.java:28)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at org.itxtech.nemisys.plugin.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:48)	at org.itxtech.nemisys.plugin.PluginManager.loadPlugin(PluginManager.java:83)	at org.itxtech.nemisys.plugin.PluginManager.loadPlugins(PluginManager.java:264)	at org.itxtech.nemisys.plugin.PluginManager.loadPlugins(PluginManager.java:119)	at org.itxtech.nemisys.plugin.PluginManager.loadPlugins(PluginManager.java:111)	at org.itxtech.nemisys.plugin.PluginManager.loadPlugins(PluginManager.java:107)	at org.itxtech.nemisys.Server.(Server.java:166)	at org.itxtech.nemisys.Nemisys.main(Nemisys.java:48)