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  1. ,
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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:

Solutions on the web

via GitHub by DanielRamosAcosta
, 1 year ago
java.lang.NoClassDefFoundError: me/clip/placeholderapi/PlaceholderHook
via GitHub by x00dis
, 1 year ago
java.lang.UnsupportedClassVersionError: me/gnat008/perworldinventory/PerWorldInventory : Unsupported major.minor version 52.0
via GitHub by martixingwei
, 1 year ago
java.lang.UnsupportedClassVersionError: me/lucko/luckperms/bukkit/LPBukkitPlugin : Unsupported major.minor version 52.0
via GitHub by ExcitedFrog1s
, 7 months ago
java.lang.NoClassDefFoundError: think/rpgitems/power/Power
via GitHub by GitGraf
, 1 year ago
java.lang.NoClassDefFoundError: **com/bugsnag/callbacks/Callback**
via GitHub by HariSeldon51
, 1 year ago
java.lang.NoClassDefFoundError: net/md_5/bungee/api/plugin/Plugin
java.lang.ClassNotFoundException: me.clip.placeholderapi.PlaceholderHook	at Source)	at	at	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Unknown Source)	at	at	at org.bukkit.plugin.SimplePluginManager.loadPlugin(	at org.bukkit.plugin.SimplePluginManager.loadPlugins(	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.loadPlugins(	at net.minecraft.server.v1_11_R1.DedicatedServer.init(	at	at Source)