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  1. ,
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    Update "latest" to Java 8 on DockerHub.

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    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 Google Groups by user3654744 via StackOverflow, 4 months ago
org/apache/jsp/PessoaApplication_jsp : Unsupported major.minor version 52.0 at com.google.appengine.runtime.Request.process-6a9f678c146455a7(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)