Crashlytics Found An Invalid API Key: Null. After Updated Com.google.gms:google-services:4.1.0

I had this bug after updated from com.google.gms:google-services:4.0.1 to com.google.gms:google-services:4.1.0 Crashlytics found an invalid API key: null. Check the Crashlytics pl

Solution 1:

Try adding this to manifest

<meta-data
    android:name="com.google.android.gms.ads.APPLICATION_ID"
    android:value="ca-app-pub-xxxxxx~xxxxxx"/>

See my related answer to Default FirebaseApp is not initialized for more details.

Solution 2:

Try adding following dependency

implementation 'com.google.firebase:firebase-crash:16.2.1'

Solution 3:

In my case, the error was produced because I was picking the wrong APK file. You should pick the debug apk (app-debug.apk) instead of the app-name.apk.

Solution 4:

You need to add the meta data for the fabric in AndroidManifest.xml

<meta-data
android:name="io.fabric.ApiKey"
android:value="xxx6c41xxx6ec601xxxd4xxxa2" />

Be guided that the best way is stated below:

Add the Fabric API key to your fabric.properties: apiKey=fabric_api_key

# Fabric properties file: app/fabric.properties
apiSecret=xx68f6074dxxxxxc11dxxx97c172e8ebf0
apiKey=xxxe75b4xxxx97e8cxxxx0135e9d46f5a2xxx

Official documentation

Solution 5:

update google plugin from

classpath 'com.google.gms:google-services:4.1.0'

to

classpath 'com.google.gms:google-services:4.2.0'