Trying to read Google Fit step count using the package health

I created a custom action on a page load to go fetch the step count for the last 24 hours using the Code Copilot. The code is below.

When I try to save my code, I get the error - The action is empty or cannot be parsed.

Any insight?

// Automatic FlutterFlow imports

import '/backend/supabase/supabase.dart';

import '/flutter_flow/flutter_flow_theme.dart';

import '/flutter_flow/flutter_flow_util.dart';

import '/custom_code/actions/index.dart'; // Imports other custom actions

import '/flutter_flow/custom_functions.dart'; // Imports custom functions

import 'package:flutter/material.dart';

// Begin custom action code

// DO NOT REMOVE OR MODIFY THE CODE ABOVE!

Future newCustomAction() async {

  // Using the package health, access the Google Fit step count for the last 24 hours.

import 'package:health/health.dart';

Future<int> getStepCount() async {

  // Define the time range for the query

  DateTime endDate = DateTime.now();

  DateTime startDate = endDate.subtract(Duration(hours: 24));

  // Define the query parameters

  HealthDataQuery query = HealthDataQuery(

    dataType: HealthDataType.STEPS,

    dateFrom: startDate,

    dateTo: endDate,

  );

  // Request authorization to access health data

  bool authorized = await Health.requestAuthorization();

  if (authorized) {

    // Retrieve the step count data

    List<HealthDataPoint> results = await Health.getHealthDataFromType(query);

    // Calculate the total step count

    int stepCount = 0;

    results.forEach((result) {

      stepCount += result.value.toInt();

    });

    return stepCount;

  } else {

    throw Exception('Authorization not granted');

  }}