10-04 14:19:31.269 23503-23503/? D/ViewRootImpl@6fc692d[UnityPlayerNativeActivity]: MSG_WINDOW_FOCUS_CHANGED 1
10-04 14:19:40.194 23503-23565/? E/Unity: Exception: WWW download uibundle had an error: , 200

                                          UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
                                          UnityEngine.DebugLogHandler:LogException(Exception, Object)
                                          UnityEngine.Logger:LogException(Exception, Object)
                                          UnityEngine.Debug:LogException(Exception)
                                          <LoadAssetBundleWWW>c__Iterator0:MoveNext()
                                          UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

                                          (Filename:  Line: -1)
10-04 14:19:40.249 23503-23565/? I/Unity: Download from server common_chapter1