title: The named parameter 'column' isn't defined. Try correcting the name to an existing named parameter's name
body: <p>`</p>
  <pre><code>Widget build(BuildContext context) {
      double height=MediaQuery.of(context).size.height;
      double width=MediaQuery.of(context).size.width;
      return Scaffold(
        appBar: AppBar(
          title: Text(&quot;Device Details&quot;),
          backgroundColor: Colors.black,
        ),
        body : SingleChildScrollView(
          child: Container(
              **Column**: &lt;Widget&gt;[
                Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: &lt;Widget&gt;[
                    getImageWidget(),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                      children: &lt;Widget&gt;[
                        MaterialButton(
                            color: Colors.green,
                            child: Text(
                              &quot;Camera&quot;,
                              style: TextStyle(color: Colors.white),
                            ),
                            onPressed: () {
                              getImage(ImageSource.camera);
                            }),
  </code></pre>
  <p>`The named parameter 'column' isn't defined.  Try correcting the name to an existing named parameter's name, or defining a named parameter with the name 'column'. Open documentation.</p>
  <p>If I replace column with &quot;body&quot; at  <strong>column:SingleChildScrollView(</strong></p>
  <p>then it is saying as The argument for the named parameter 'body' was already specified.</p>
  <p>Please fix my issue by giving your valuable suggestions.</p>
  <pre><code>class _MyFormPageState extends State&lt;MyFormPage&gt; {
  
    File _selectedFile;
    bool _inProcess = false;
  
    Widget getImageWidget() {
      if (_selectedFile != null) {
        return Image.file(
          _selectedFile,
          width: 250,
          height: 250,
          fit: BoxFit.cover,
        );
      } else {
        return Image.asset(
          &quot;assets/placeholder.jpg&quot;,
          width: 250,
          height: 250,
          fit: BoxFit.cover,
        );
      }
    }
  
    getImage(ImageSource source) async {
      this.setState((){
        _inProcess = true;
      });
      File image = await ImagePicker.pickImage(source: source);
      if(image != null){
        File cropped = await ImageCropper.cropImage(
            sourcePath: image.path,
            aspectRatio: CropAspectRatio(
                ratioX: 1, ratioY: 1),
            compressQuality: 100,
            maxWidth: 700,
            maxHeight: 700,
            compressFormat: ImageCompressFormat.jpg,
            androidUiSettings: AndroidUiSettings(
              toolbarColor: Colors.deepOrange,
              toolbarTitle: &quot;RPS Cropper&quot;,
              statusBarColor: Colors.deepOrange.shade900,
              backgroundColor: Colors.white,
            )
        );
  
        this.setState((){
          _selectedFile = cropped;
          _inProcess = false;
        });
      } else {
        this.setState((){
          _inProcess = false;
        });
      }
    }
  
    final dbHelper = DatabaseHelper.instance;
    String companyname,modelname,series,mfgyear;
    @override
    Widget build(BuildContext context) {
      double height=MediaQuery.of(context).size.height;
      double width=MediaQuery.of(context).size.width;
      return Scaffold(
          body: Stack(
            children: &lt;Widget&gt;[
              Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: &lt;Widget&gt;[
                  getImageWidget(),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: &lt;Widget&gt;[
                      MaterialButton(
                          color: Colors.green,
                          child: Text(
                            &quot;Camera&quot;,
                            style: TextStyle(color: Colors.white),
                          ),
                          onPressed: () {
                            getImage(ImageSource.camera);
                          }),
                      MaterialButton(
                          color: Colors.deepOrange,
                          child: Text(
                            &quot;Device&quot;,
                            style: TextStyle(color: Colors.white),
                          ),
                          onPressed: () {
                            getImage(ImageSource.gallery);
                          })
                    ],
                  )
                ],
              ),
              (_inProcess)?Container(
                color: Colors.white,
                height: MediaQuery.of(context).size.height * 0.95,
                child: Center(
                  child: CircularProgressIndicator(),
                ),
              ):Center()
            ],
          ),
  
        appBar: AppBar(
          title: Text(&quot; Details&quot;),
          backgroundColor: Colors.black,
        ),
        
        **column** : SingleChildScrollView(
          child: Container(
          decoration: new BoxDecoration(
            color: Colors.black,
            image: new DecorationImage(
              fit: BoxFit.cover,
              colorFilter: new ColorFilter.mode(Colors.grey.withOpacity(.5),BlendMode.dstATop),
              image: new AssetImage(
                &quot;asset/bg00.jpg&quot;
              ),
            ),
          ),
          height: height,
          width: width,
          child: Padding(
            padding: const EdgeInsets.all(5),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: &lt;Widget&gt;[
                Text(
                  &quot;Enter the Device Details&quot;,
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 30,
                    fontWeight: FontWeight.bold,
                  ),
                ),
  
  
                TextField(
                  onChanged: (val){
                    companyname=val;
                  },
                  cursorColor: Colors.black,
                  style: TextStyle(
                      height: 1
                  ),
                  decoration: InputDecoration(
                    filled: true,
                    fillColor: Colors.grey[500],
                    prefixIcon: Icon(Icons.edit,color: Colors.blue[900],),
                    hintStyle: TextStyle(
                      color:Colors.black,
                    ),
                    hintText: &quot;Enter the Company Name&quot;,
                  ),
                ),
                SizedBox(
                  height: 5,
                ),
  
                
  
             
  </code></pre>