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  1. ,
    Expert tip

    A few things cause this exception:
    1) Check if you have all jars and if they're in the correct path.
    2) Your classpath might be broken, you can define it in the command line with java -cp yourClassPath or at your IDE if you're using one.

  2. ,
    via netty.io by Unknown author

    Needs to add netty-transport-native-epoll with a OS classifier to the classpath, it's not included in netty-all

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