Android Crash

gistfile1.txt

java.lang.RuntimeException: retrofit.converter.ConversionException: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
	at com.Challfie.android.challfiefragment.AddChallfieFinalActivity$7.failure(AddChallfieFinalActivity.java:415)
	at retrofit.CallbackRunnable$2.run(CallbackRunnable.java:53)
	at android.os.Handler.handleCallback(Handler.java:739)
	at android.os.Handler.dispatchMessage(Handler.java:95)
	at android.os.Looper.loop(Looper.java:135)
	at android.app.ActivityThread.main(ActivityThread.java:5424)
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:913)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
Caused by: retrofit.converter.ConversionException: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
	at retrofit.converter.GsonConverter.fromBody(GsonConverter.java:67)
	at retrofit.RetrofitError.getBodyAs(RetrofitError.java:137)
	... 10 more
Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:200)
	at com.google.gson.Gson.fromJson(Gson.java:810)
	at com.google.gson.Gson.fromJson(Gson.java:775)
	at retrofit.converter.GsonConverter.fromBody(GsonConverter.java:63)
	... 11 more
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
	at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:387)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:189)
	... 14 more