Throntail Jaeger fraction fails on runtime exception

2018-09-19 17:48:09,902 ERROR [stderr] (Timer-1) Exception in thread "Timer-1" java.lang.RuntimeException: Unable to invoke no-args constructor for class io.jaegertracing.internal.samplers.http.SamplingStrategyResponse. Registering an InstanceCreator with Gson for this type may fix this problem.
2018-09-19 17:48:09,902 ERROR [stderr] (Timer-1) at com.google.gson.internal.ConstructorConstructor$14.construct(ConstructorConstructor.java:226)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:210)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at com.google.gson.Gson.fromJson(Gson.java:888)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at com.google.gson.Gson.fromJson(Gson.java:853)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at com.google.gson.Gson.fromJson(Gson.java:802)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at com.google.gson.Gson.fromJson(Gson.java:774)
2018-09-19 17:48:09,903 ERROR [stderr] (Timer-1) at io.jaegertracing.internal.samplers.HttpSamplingManager.parseJson(HttpSamplingManager.java:49)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) at io.jaegertracing.internal.samplers.HttpSamplingManager.getSamplingStrategy(HttpSamplingManager.java:68)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) at io.jaegertracing.internal.samplers.RemoteControlledSampler.updateSampler(RemoteControlledSampler.java:88)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) at io.jaegertracing.internal.samplers.RemoteControlledSampler$1.run(RemoteControlledSampler.java:70)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) at java.util.TimerThread.mainLoop(Timer.java:555)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) at java.util.TimerThread.run(Timer.java:505)
2018-09-19 17:48:09,904 ERROR [stderr] (Timer-1) Caused by: java.lang.UnsupportedOperationException: Cannot allocate class io.jaegertracing.internal.samplers.http.SamplingStrategyResponse
2018-09-19 17:48:09,905 ERROR [stderr] (Timer-1) at com.google.gson.internal.UnsafeAllocator$4.newInstance(UnsafeAllocator.java:104)
2018-09-19 17:48:09,905 ERROR [stderr] (Timer-1) at com.google.gson.internal.ConstructorConstructor$14.construct(ConstructorConstructor.java:223)
2018-09-19 17:48:09,905 ERROR [stderr] (Timer-1) ... 11 more