java.lang.NoClassDefFoundError: $Proxy1

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You need to add httpcore to your dependencies. Try adding version 4.3 or further.

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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.

Solutions on the web

via pentaho.com by Unknown author, 1 year ago
via Google Groups by pvsp, 4 months ago
java.lang.ClassNotFoundException: javax.management.MBeanServer
at java.lang.ClassLoader.findClass(libgcj.so.7)
at java.lang.ClassLoader.loadClass(libgcj.so.7)

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