url_launcher on flutter web not working after deployment

plase assist

on the emulator the url_launcher working very well, but after deploy not working at all,

  // Function to launch URLs
  void _launchUrl(Uri url) async {
    print('Attempting to launch URL: $url');
    try {
      if (await canLaunchUrl(url)) {
        print('Launching...');
        await launchUrl(url);
        print('Launched successfully');
      } else {
        print('Could not launch $url');
      }
    } catch (e) {
      print('Error launching URL: $e');
    }
  }

///////////////////////kava/////////////////////
  final String kfacebookUrl = 'https://www.example.com/companyname/';
  final String kInstaUrl = 'https://www.example.com/companyname/';
  final String kWhatsappUrl = 'https://example.me/123456789';
  final String kEmailAddress = '[email protected]';
  final String kPhoneNumber = '123456789';
  final String kMap = 'https://example.com/xcvg9ccQFdXexNHn6';
  final String kWeb =
      'https://example.web.app/'; // Ensure to include 'https://'

want the url working please