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    Look if your classpath is correct, and check if the versions of your libraries match the version you described in your pom.xml

Solutions on the web

via GitHub by pascalgrimaud
, 1 year ago
via Stack Overflow by John S
, 9 months ago
via GitHub by teaforthecat
, 1 year ago
lux_data_io/IO (wrong name: lux_data_io/io)
via Google Groups by Pasquale Iodice, 1 year ago
via Google Groups by Shishir Kumar, 1 year ago
java.lang.NoClassDefFoundError: io/netty/channel/socket/DuplexChannel	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(	at	at	at$100(	at$	at$	at Method)