java.lang.UnsupportedClassVersionError: org/webjars/WebJarExtractor$Cache : Unsupported major.minor version 51.0

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  1. 0

    Java config for Lightbend Activator

    Ask Ubuntu | 7 months ago | Christopher Brinkley
    java.lang.UnsupportedClassVersionError: org/webjars/WebJarExtractor$Cache : Unsupported major.minor version 51.0
  2. 0

    Failed to load sbt config on Ubuntu when it worked on Windows

    GitHub | 7 months ago | brinklec
    java.lang.UnsupportedClassVersionError: org/webjars/WebJarExtractor$Cache : Unsupported major.minor version 51.0 ``` In the "activator run" case, there is a long error stack that begins and ends like this: ```

    Root Cause Analysis

    1. java.lang.UnsupportedClassVersionError

      org/webjars/WebJarExtractor$Cache : Unsupported major.minor version 51.0

      at java.lang.Classloader.defineClass1()
    2. Java RT
      Classloader.defineClass1
      1. java.lang.Classloader.defineClass1(Native Method)
      1 frame