java.lang.RuntimeException: Can not convert this type of property: class com.google.gson.internal.LinkedTreeMap

INFO [2018-09-18 19:00:58,938] ({main} FileSystemConfigStorage.java[loadInterpreterSettings]:75) - Load Interpreter Setting from file: hdfs://server:8020/user/zeppelin/conf/interpreter.json
 
WARN [2018-09-18 19:00:59,081] ({main} ContextHandler.java[log]:2177) - unavailable

MultiException stack 1 of 1
java.lang.RuntimeException: Can not convert this type of property: class com.google.gson.internal.LinkedTreeMap
        at org.apache.zeppelin.interpreter.InterpreterSetting.convertInterpreterProperties(InterpreterSetting.java:925)

at org.apache.zeppelin.interpreter.InterpreterSettingManager.loadFromFile(InterpreterSettingManager.java:221)
        at org.apache.zeppelin.interpreter.InterpreterSettingManager.init(InterpreterSettingManager.java:337)
        at org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:171)
        at org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:131)
        at org.apache.zeppelin.server.ZeppelinServer.<init>(ZeppelinServer.java:151)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1375)
        at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1007)