Hello,

Please read the section on Error cases (
https://developer.android.com/training/safetynet/attestation#compat-check-response
):

Error cases

The JWS message can also show several types of error conditions:

   - A null result indicates that the call to the service didn't complete
   successfully.
   -

   An error parameter indicates that an issue occurred, such as a network
   error or an error that an attacker feigned. Most errors are transient and
   should be absent if you retry the call to the service. You may want to
   retry a few more times with increasing delays between each retry.

   *Important:* If you trigger more than 5 calls per minute, you exceed the
   API's fixed rate limit, which causes the remaining requests during that
   minute to return an error.

   If an error occurs, the result cannot represent a passed test, as an
   attacker might intentionally trigger such an error.


On Tue, Oct 23, 2018 at 1:19 AM peter zencuch <peterzenc...@gmail.com>
wrote:

> *Edit, only on one device i see this issue. Its original device i develope
> on, on other devices its working, is there any quotta for one device??
>
> Dňa pondelok, 27. augusta 2018 9:07:39 UTC+2 parth k napísal(-a):
>>
>> Hello,
>>
>> I have download safetynet sample application from google github
>> repository googlesamples <https://github.com/googlesamples>   and when i
>> run this sample application i am getting this error " Error: NETWORK_ERROR
>> : null".
>> also internet connectivity is available in device. and previously this
>> application is working fine without any changes.
>>
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