CODEWITHSUNDEEP
node.jsfirebasefirebase-realtime-databasegoogle-oauthfirebase-admin
JonHayman
JonHayman

Reputation: 186

Firebase Admin failed to fetch a valid Google OAuth2 access token - unable to verify certificate

Any help appreciated.

Currently developing on localhost.
Date and time are in sync.
Latest firebase-admin installed.

This was working absolutely fine one day and not the next. (No changes).

Terminal output:
@firebase/database: FIREBASE WARNING: {"code":"app/invalid-credential","message":"Credential implementation provided to initializeApp() via the \"credential\" property failed to fetch a valid Google OAuth2 access token with the following error: \"unable to verify the first certificate\"."}

This is the begining of the app.js:

//requires
var radius = require("radius");
var dgram = require("dgram");
var admin = require("firebase-admin");    

//for CHAP hashing
var crypto = require("crypto");

//Load additional radius dictionaries
radius.add_dictionary('./radius_dictionaries');

//init firebase
var serviceAccount = require("./serviceKey.json");
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: "https://<database>.firebaseio.com/"
});
//init db object
var db = admin.database();

This app does not present an HTTPS webpage, or and HTTPS end point for http requests. Simply connects to the Firebase database and reads data.

Upvotes: 2

Views: 3573

Answers (1)

JonHayman
JonHayman

Reputation: 186

Started a clean app and had an issue where I couldn't even install firebase-admin.

With a bit of digging I noticed that node-pre-gyp was throwing alot of stack errors while trying to build, and node couldn't find my local python install (despite being installed).

gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with 
exit code: 1
gyp ERR! stack     at ChildProcess.onExit 
(C:\Users\Jonth\AppData\Roaming\npm\node_modules\npm\node_modules\node- 
gyp\lib\build.js:262:23)

And certificate errors again

node-pre-gyp WARN Hit error unable to verify the first certificate

So what I did to fix the issue was:

RUN

npm install --global --production windows-build-tools

AND RUN

This is what really fixed the issue

set NODE_TLS_REJECT_UNAUTHORIZED=0

I can now run my app and continue with development.
Why I needed to do this I don't honestly know.
If someone could enlighten me, I'm all ears.
I can only hope this doesn't effect my app when it gets deployed to the Google cloud.

FYI, development PC is Windows 10 Pro

Upvotes: 1

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