One Signal setup not match with current firebase dependencies - flutter

Question

I try to prepare my flutter app to work with one signal plugin , but when follow the steps that defined by one signal itself , there are many error related to version of dependancies appear I upgrade them but the problem is still exist and not clear for me
FAILURE: Build failed with an exception.
* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> In project 'android' a resolved Google Play services library dependency depends on another at an exact version (e.g. "[1
0.2.1, 16.0.99]", but isn't being resolved to that version. Behavior exhibited by the library will be unknown.
Dependency failing: com.onesignal:OneSignal:3.15.6 -> com.google.android.gms:play-services-location#[10.2.1, 16.0.99], b
ut play-services-location version was 17.1.0.
The following dependencies are project dependencies that are direct or have transitive dependencies that lead to the art
ifact with the issue.
-- Project 'android' depends on project 'geolocator' which depends onto com.google.android.gms:play-services-location#16
.0.0
-- Project 'android' depends on project 'app' which depends onto com.onesignal:OneSignal#[3.15.6, 3.99.99]
-- Project 'android' depends on project 'app' which depends onto com.onesignal:OneSignal#{strictly 3.15.6}
-- Project 'android' depends on project 'onesignal_flutter' which depends onto com.onesignal:OneSignal#3.15.6
-- Project 'android' depends on project 'app' which depends onto com.google.android.gms:play-services-location#17.1.0
-- Project 'android' depends on project 'app' which depends onto com.google.android.gms:play-services-location#{strictly
17.1.0}
-- Project 'android' depends on project 'location' which depends onto com.google.android.gms:play-services-location#16.+
For extended debugging info execute Gradle from the command line with ./gradlew --info :android:assembleDebug to see the
dependency paths to the artifact. This error message came from the google-services Gradle plugin, report issues at http
s://github.com/google/play-services-plugins and disable by adding "googleServices { disableVersionCheck = true }" to you
r build.gradle file.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. ```

Answer 1

May be this issue arise because your project not match with this version of library ,
Try to use this way(default version)
onesignal_flutter:
Not this way
onesignal_flutter: ^2.6.2