chapter 4 run with crash

[HiconKong]

2019-12-10 18:41:45.760 9806-9828/com.pullrefreshexample E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher
Process: com.pullrefreshexample, PID: 9806
java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING
at android.util.JsonReader.expect(JsonReader.java:310)
at android.util.JsonReader.beginArray(JsonReader.java:277)
at com.facebook.react.devsupport.BundleDownloader.patchDelta(BundleDownloader.java:348)
at com.facebook.react.devsupport.BundleDownloader.storeDeltaInFile(BundleDownloader.java:302)
at com.facebook.react.devsupport.BundleDownloader.processBundleResult(BundleDownloader.java:258)
at com.facebook.react.devsupport.BundleDownloader.access$100(BundleDownloader.java:42)
at com.facebook.react.devsupport.BundleDownloader$1.onResponse(BundleDownloader.java:209)
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:135)
at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)