I’m trying to learn Flutter by building a toy example.

Whenever I add my TextField into this basic example, none of the other Widgets show up. The Layout Explorer in VS Code doesn’t show the layout anymore, and I don’t see any error logs.

Two questions:

1) How I can debug what I’ve done wrong? I want to learn for next time.

2) What have I done wrong?

import 'package:flutter/material.dart';

class PageFive extends StatefulWidget
{
  const PageFive({super.key});

 @override
  State<StatefulWidget> createState()
  {
    return PageFiveState();
  } 
}

class PageFiveState extends State
{
  TextEditingController tfc = TextEditingController();
@override
  Widget build(BuildContext context)
  {
    return MaterialApp(
      home: SafeArea(
        child: Scaffold(
          backgroundColor: Colors.amber[200] ,
          appBar: AppBar(
            centerTitle: true,
            title: Text("This is light red"),
            backgroundColor: Colors.red[300]),
          body: Row (
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: [
              Column(
                children: [
                  Padding(padding: EdgeInsets.all(10)),
                  Text("one"),
                  Padding(padding: EdgeInsets.all(10)),
                  TextField( // If I comment out this widget, everything else shows up
                    controller: tfc,
                    onChanged: textFieldChangedCallback,
                    decoration: InputDecoration(
                      labelText: "This is the label",
                      border: OutlineInputBorder(borderRadius: BorderRadius.all(Radius.circular(12))),
                      hintText: 'Write something here',
                    ),
                  ),
                Padding(padding: EdgeInsets.all(10)),
                Text("tfc.value.text"), // yes, I know to lose the quotes. This just made it easier to comment stuff out for now.
                ],
              ),
              Column(
                children: [
                  Padding(padding: EdgeInsets.all(10)),
                  Text("two"),
                ],
              ),
            ],
          ),
          ),
        ),
    );
  }

void textFieldChangedCallback(String newValue)
{
  setState(() {
  });
}

}