When I start my app it shows log:
07-13 18:15:09.717: I/AdWhirl SDK(10727): Creating adWhirlManager...
07-13 18:15:09.717: D/AdWhirl SDK(10727): Locale is: ru_RU
07-13 18:15:09.727: D/AdWhirl SDK(10727): Hashed device ID is: DEVICE_ID
07-13 18:15:09.727: I/AdWhirl SDK(10727): Finished creating adWhirlManager
07-13 18:15:09.737: D/AdWhirl SDK(10727): Prefs{APP_KEY}: {"config": "null", "timestamp": -1}
07-13 18:15:09.737: I/AdWhirl SDK(10727): Stored config info not present or expired, fetching fresh data
07-13 18:15:09.797: E/AdWhirl SDK(10727): Caught IOException in fetchConfig()
07-13 18:15:09.797: D/AdWhirl SDK(10727): Received jsonString: null
07-13 18:15:09.807: D/libEGL(10727): loaded /system/lib/egl/libGLES_android.so
07-13 18:15:09.807: E/AdWhirl SDK(10727): Unable to parse response from JSON. This may or may not be fatal.
07-13 18:15:09.807: E/AdWhirl SDK(10727): java.lang.NullPointerException
How this could be solved?