The program was running fine, a few days ago, but now it just wouldn't read/write to the database. I'm running on ArduinoJson 5.13.5 and using FirebaseArduino library. I have set all the rules to true, would love to know how to debug this error. Also Firebase.error() does not give any output at all!

1 Answer 1


Apparently the Firebase's fingerprint has changed recently and has caused the above issue!

from here get the latest finger print and change it in the ...\Arduino\libraries\firebase-arduino-master\src\FirebaseHttpClient.h

In the file mentioned above: update the value of static const char kFirebaseFingerprint[] to the new one mentioned above.

P.S. One issue going forward for me(planing on implementing it on a long term basis) is how to be ahead of this issue in the future, so that I can get the data uninterrupted!

  • It is OK to accept your own answer as the solution to the problem.
    – VE7JRO
    Aug 1, 2020 at 17:32

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