hello i am new in JanusGraph. When i use Janusgraph in Apache Atlas, i found a question, the error is :
Couldnot find a type identifier for the class:class org.apache.atlas.typesystem.types.DataTypes$TypeCategory.Make sure the value to serialize has a type identifier registered for its class. org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException:Couldnot find a type identifier for the class:class org.apache.atlas.typesystem.types.DataTypes$TypeCategory.Make sure the value to serialize has a type identifier registered for its class. at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._wrapAsIOE(DefaultSerializerProvider.java:509) at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:482) at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3893) at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:3164) at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONWriter.writeVertex(GraphSONWriter.java:82) at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONWriter.writeVertices(GraphSONWriter.java:110) at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONWriter.writeGraph(GraphSONWriter.java:71) at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONIo.writeGraph(GraphSONIo.java:83) at org.apache.tinkerpop.gremlin.structure.io.Io$writeGraph.call(UnknownSource) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:128) at groovysh_evaluate.run(groovysh_evaluate:3) at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:236) at org.codehaus.groovy.tools.shell.Interpreter.evaluate(Interpreter.groovy:71) at org.codehaus.groovy.tools.shell.Groovysh.execute(Groovysh.groovy:196) at org.apache.tinkerpop.gremlin.console.GremlinGroovysh.super$3$execute(GremlinGroovysh.groovy) at sun.reflect.GeneratedMethodAccessor14.invoke(UnknownSource) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1225) at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:145) at org.apache.tinkerpop.gremlin.console.GremlinGroovysh.execute(GremlinGroovysh.groovy:72) at org.codehaus.groovy.tools.shell.Shell.leftShift(Shell.groovy:122) at org.codehaus.groovy.tools.shell.ShellRunner.work(ShellRunner.groovy:95) at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$work(InteractiveShellRunner.groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1225) at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:145) at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:165) at org.codehaus.groovy.tools.shell.InteractiveShellRunner.work(InteractiveShellRunner.groovy:130) at org.codehaus.groovy.tools.shell.ShellRunner.run(ShellRunner.groovy:59) at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$run(InteractiveShellRunner.groovy) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.
