We have 2 apps with Expo, both on sdk 36.
For a long time (over a year), we have been receiving random exceptions when posting them to Expo servers, using the Ruby SDK, always related to the FCM credentials:
Exponent::Push::InvalidCredentialsError: Unable to retrieve the FCM server key for the recipient's app. Make sure you have provided a server key as directed by the Expo FCM documentation.
However, in our tests, notifications work, and if we run
expo push:android:show, we get back our FCM key, with status OK; however, since expo raises this exception randomly, we are dropping some notifications daily.
I opened a post about this in Jan/2019, but received no replies from the Expo team.
Can anybody help?