Solution

In your android/app/build.gradle, update the following:

android {
    // ...
    defaultConfig {
        // ...
        minSdkVersion 16
    }
}

into:

android {
    // ...
    defaultConfig {
        // ...
        minSdkVersion 23
    }
}

Note: You need to use minSdkVersion 23 when using firebase in flutter.

That’s All.

Thanks for reading.

Keep Coding.