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  1. ,
    via Google Groups by Marcus Haebler

    Update "latest" to Java 8 on DockerHub.

  2. ,
    via GitHub by Athou

    You're using an older version of java with classes compiled for java7

Solutions on the web

via Stack Overflow by Katedral Pillon
, 1 year ago
org/apache/jsp/editor_005fform_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-9f0a91645afbfd1f(Request.java)
via Stack Overflow by Katedral Pillon
, 1 year ago
org/apache/jsp/editor_005fform_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-9f0a91645afbfd1f(Request.java)
via Google Groups by Katedral Pillon via StackOverflow, 1 year ago
org/apache/jsp/editor_005fform_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-9f0a91645afbfd1f(Request.java)
via Google Groups by Katedral Pillon via StackOverflow, 1 year ago
org/apache/jsp/editor_005fform_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-9f0a91645afbfd1f(Request.java)
via Google Groups by Anuja Deshmukh, 2 years ago
org/apache/jsp/final_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-2eed26292fffb206(Request.java)
via Stack Overflow by i3wangyi
, 1 year ago
org/apache/jsp/index_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-aea5c804a9f29902(Request.java)
java.lang.UnsupportedClassVersionError: org/apache/jsp/editor_005fform_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-9f0a91645afbfd1f(Request.java) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:820) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.lang.ClassLoader.loadClass(ClassLoader.java:375) at org.mortbay.util.Loader.loadClass(Loader.java:91) at org.mortbay.util.Loader.loadClass(Loader.java:71) at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73) at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:446) at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:453) at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:276) at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:312) at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:304) at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:450) at java.lang.Thread.run(Thread.java:745)