Crashlytics is it send twice errors?

[amrgetment]

It is really a useful library
I want to add crashlytics integration but I wonder what will happen if I receive a crash in Talker and Crashlytics catches it too
By default Crashlytics catches errors so is this a duplicate catch if I add a CrashlyticsTalkerObserver

  void onError(err) {
      FirebaseCrashlytics.instance.recordError(
        err.error,
        err.stackTrace,
        reason: err.message,
      );
  }