E : Failed to get service from broker. java.lang.SecurityException: Unknown calling package name 'com.google.android.gms'

I had recently integrated FireStore into my Flutter application and got the following error on launch:

java.lang.SecurityException: Unknown calling package name 'com.google.android.gms'.
    at android.os.Parcel.readException(Parcel.java:2016)
    at android.os.Parcel.readException(Parcel.java:1962)
    at amyk.a(:com.google.android.gms@243633004@24.36.33
    at amwr.z(:com.google.android.gms@243633004@24.36.33
    at amdz.run(:com.google.android.gms@243633004@24.36.33
    at android.os.Handler.handleCallback(Handler.java:809)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at bpbc.ly(:com.google.android.gms@243633004@24.36.33
    at bpbc.dispatchMessage(:com.google.android.gms@243633004@24.36.33
    at android.os.Looper.loop(Looper.java:166)
    at android.os.HandlerThread.run(HandlerThread.java:65)

1. When using Firebase Authentication:

Make sure your Android SDK is up to date. You can do this from Android Studio:

• Go to Tools > SDK Manager.
• Check the installed SDK components.
• If any have updates available, update them.

Updating the SDK resolved the problem for me.

⸻

2. When using Firebase Firestore: I discovered there were conflicting versions of Google Play Services installed. To check this:

• Use the following ADB command to list the installed versions:

adb shell dumpsys package com.google.android.gms | grep versionName 

• In my case, I saw two versions:
• versionName=25.08.32
• versionName=24.23.35

To fix the conflict:

• Open your device Settings.
• Go to Apps > Google Play Services.
• Reset Google Play Services to the default (base) version.
• Run the ADB command again to confirm that only one version remains (in my case, versionName=24.23.35).

After this cleanup, the error disappeared.