[firebase-cloud-founction]: issues in invoke onCall function

[Amani-AS]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Cloud Functions

Which platforms are affected?

No response

Description

When calling a Callable function that has "Require authentication" enabled using the Firebase SDK in Flutter, I get the following error in the Cloud Console logs:
httpRequest: {10}
insertId: "-----------"
labels: {5}
logName: "projects/nanec/logs/run.googleapis.com%2Frequests"
receiveTimestamp: "2025-08-12T15:00:48.491917366Z"
resource: {2}
severity: "WARNING"
spanId: "56befffff8516aa7"
textPayload: "The request was not authenticated. Either allow unauthenticated invocations or set the proper Authorization header. Read more at: https://cloud.google.com/run/docs/securing/authenticating"
timestamp: "2025-08-12T15:00:48.125692Z"
trace: "projects/wajeby-45ddc/traces/d0802d8a3b4524e2babdbbaf4652a4eb"
traceSampled: true
The number of requests executed by the function remains zero, even though the user is logged in.
However, when I switch the function to "Public access," it works normally.
Function version: v2 Callable function
Flutter Firebase Functions package version: 5.6.2

Reproducing the issue

When calling a Callable function that has "Require authentication" enabled using the Firebase SDK in Flutter, I get the following error in the Cloud Console logs:
httpRequest: {10}
insertId: "-----------"
labels: {5}
logName: "projects/nanec/logs/run.googleapis.com%2Frequests"
receiveTimestamp: "2025-08-12T15:00:48.491917366Z"
resource: {2}
severity: "WARNING"
spanId: "56befffff8516aa7"
textPayload: "The request was not authenticated. Either allow unauthenticated invocations or set the proper Authorization header. Read more at: https://cloud.google.com/run/docs/securing/authenticating"
timestamp: "2025-08-12T15:00:48.125692Z"
trace: "projects/wajeby-45ddc/traces/d0802d8a3b4524e2babdbbaf4652a4eb"
traceSampled: true
The number of requests executed by the function remains zero, even though the user is logged in.
However, when I switch the function to "Public access," it works normally.
Function version: v2 Callable function
Flutter Firebase Functions package version: 5.6.2

Firebase Core version

3.15.1

Flutter Version

3.32

Relevant Log Output

Flutter dependencies

Expand Flutter dependencies snippet

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

Additional context and comments

No response

[MichaelVerdon]

I believe authentication through enforced cloud functions should work if you are signed in or authenticated using the 'Auth' package. If user authentication is within the scope of your app can you please try sign in to a user or test user and use the function?

[google-oss-bot]

Hey @Amani-AS. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!