listview not working in flutter Android release mode

listview not working in flutter Android release mode I am using firebase as the database in my app.

import 'dart:async';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_admob/firebase_admob.dart';
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:velocity_x/velocity_x.dart';
import 'package:mbmelearning/constants.dart';



class UsefulLinkMb extends StatefulWidget {
  @override
  _UsefulLinkMbState createState() => _UsefulLinkMbState();
}

class _UsefulLinkMbState extends State<UsefulLinkMb> {
  BannerAd _bannerAd;
  static const MobileAdTargetingInfo targetingInfo = MobileAdTargetingInfo();

  BannerAd createBannerAd() {
    return BannerAd(
      adUnitId: BannerAd.testAdUnitId,
      size: AdSize.smartBanner,
      targetingInfo: targetingInfo,
      listener: (MobileAdEvent event) {
        print("BannerAd event $event");
      },
    );
  }
  @override
  void initState() {
    super.initState();
    FirebaseAdMob.instance.initialize(appId: kBannerAdsId);
    _bannerAd = createBannerAd()..load();
  }
  @override
  Widget build(BuildContext context) {
    Timer(
        Duration(seconds: 1),
            (){
          _bannerAd.show();
        }
    );
    return Scaffold(
      backgroundColor: const Color(0xffffffff),
      body: SafeArea(
        child: ZStack([
          HomeWebsites().pLTRB(10, 50, 10, 0),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              TextButton(
                onPressed: (){
                  Navigator.pop(context);
                },
                child: VxBox(
                  child: Icon(
                    Icons.arrow_back_rounded,
                    color: kFirstColour,
                  ),
                ).color(kSecondColour).size(50,40).make(),
              ),
              VxBox(
                child: "Useful Links".text.color(kFirstColour).bold.xl3.makeCentered(),
              ).color(kSecondColour).size(200,40).make(),
            ],
          ),
        ]),
      ),
    );
  }
}

class HomeWebsites extends StatefulWidget {
  @override
  _HomeWebsitesState createState() => _HomeWebsitesState();
}

class _HomeWebsitesState extends State<HomeWebsites> {
  FirebaseFirestore firestore = FirebaseFirestore.instance;

  @override
  Widget build(BuildContext context) {
    return Expanded(
      child: StreamBuilder<QuerySnapshot>(
        stream: firestore.collection('usefulwebsites').snapshots(),
        builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
          if (!snapshot.hasData) return const Text('Loading...');
          final messageCount = snapshot.data.docs.length;
          return ListView.builder(
            itemCount: messageCount,
            itemBuilder: (_, int index) {
              final document = snapshot.data.docs[index];
              final dynamic imglink = document.get('imgurl');
              final dynamic title = document.get('urltitle');
              final dynamic description = document.get('desc');
              final dynamic weblink = document.get('weburl');
              return  SemText(
                onPressed: (){
                  launch("${weblink.toString()}");
                },
                imgurl: "${imglink.toString()}",
                title: "${title.toString()}",
                desc: "${description.toString()}",
              );
            },
          );
        },
      ),
    );
  }
}




class SemText extends StatelessWidget {
  final Function onPressed;
  final String title;
  final String imgurl;
  final String desc;
  SemText({this.onPressed,  this.title, this.imgurl,this.desc});
  @override
  Widget build(BuildContext context) {
    return TextButton(onPressed: onPressed, child: Container(
      height: context.percentHeight*15,
      width: context.percentWidth*80,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(10.0),
        border: Border.all(
          color: kFirstColour,
        ),
      ),
      child: HStack([
        VStack([
          Image.network(imgurl,
            height: 40,
            width: 40,
          ).centered(),
        ]).centered(),
        10.widthBox,
        VStack([
          title.text.color(kFirstColour).bold.center.makeCentered(),
          5.heightBox,
          desc.text.color(kFirstColour).center.makeCentered(),
        ]).centered(),
      ]).scrollHorizontal(physics: AlwaysScrollableScrollPhysics()).p(20).centered(),
    ).cornerRadius(10));
  }
}

flutter doctor

[√] Flutter (Channel stable, 2.0.5, on Microsoft Windows [Version 10.0.21359.1], locale en-IN) • Flutter version 2.0.5 at C:\Program Files\flutter • Framework revision adc687823a (3 weeks ago), 2021-04-16 09:40:20 -0700 • Engine revision b09f014e96 • Dart version 2.12.3

|Error 1 retrieving device properties for ro.product.cpu.abi: error: closed

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3) • Android SDK at C:\Users\lkrja\AppData\Local\Android\sdk • Platform android-30, build-tools 30.0.3 • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174) • All Android licenses accepted.

[√] Chrome - develop for the web • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.9.3) • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community • Visual Studio Community 2019 version 16.9.31129.286 • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 4.1.0) • Android Studio at C:\Program Files\Android\Android Studio • Flutter plugin can be installed from: https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)

[√] VS Code (version 1.56.0) • VS Code at C:\Users\lkrja\AppData\Local\Programs\Microsoft VS Code • Flutter extension version 3.22.0

[√] Connected device (4 available) • ONEPLUS A3010 (mobile) • emulator-5554 • android-arm • Android null (API null) • Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.21359.1] • Chrome (web) • chrome • web-javascript • Google Chrome 90.0.4430.93 • Edge (web) • edge • web-javascript • Microsoft Edge 90.0.818.56 ! Device emulator-5554 is offline.

• No issues found!