Error in model prediction

[DarshanDayal123]

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path_provider/path_provider.dart';
import 'package:tflite_flutter/tflite_flutter.dart';

void main() {
runApp(const MyApp());
}

class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);

@OverRide
Widget build(BuildContext context) {
return MaterialApp(
title: 'Cat or Dog',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: SplashPage(),
);
}
}

class SplashPage extends StatefulWidget {
@OverRide
_SplashPageState createState() => _SplashPageState();
}

class _SplashPageState extends State {
File? _imageFile;
late Interpreter _interpreter;
late List _labels;
bool _isLoaded = false;
bool _isImagePickerActive = false; // Flag to track image picker activity

@OverRide
void initState() {
super.initState();
loadModel().then((_) {
setState(() {
_isLoaded = true;
});
});
}

Future loadModel() async {
_interpreter = await Interpreter.fromAsset('assets/model.tflite');
_labels = await loadLabels('assets/labels.txt');
}

Future<List> loadLabels(String path) async {
String labelData = await rootBundle.loadString(path);
return labelData.trim().split('\n');
}

Future classifyImage(File imageFile) async {
if (!_isLoaded) return;

var inputImage = await imageFile.readAsBytes();
var output = List.filled(_labels.length, 0).reshape([1, _labels.length]);

_interpreter.run(inputImage, output);

var predictionIndex = output[0].indexOf(output[0].reduce((a, b) => a > b ? a : b));
var predictionLabel = predictionIndex == 0 ? 'Dog' : 'Cat';

showDialog(
  context: context,
  builder: (context) => AlertDialog(
    title: Text('Prediction'),
    content: Text('The image is classified as $predictionLabel.'),
    actions: [
      TextButton(
        onPressed: () => Navigator.pop(context),
        child: Text('OK'),
      ),
    ],
  ),
);

}

Future selectImage() async {
if (_isImagePickerActive) return; // Check if image picker is already active
_isImagePickerActive = true; // Set the flag to true

var pickedImage = await ImagePicker().pickImage(source: ImageSource.gallery);
_isImagePickerActive = false; // Reset the flag

if (pickedImage == null) return;

setState(() {
  _imageFile = File(pickedImage.path);
});

classifyImage(_imageFile!);

}

@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Cat or Dog'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
if (_imageFile != null)
Image.file(
_imageFile!,
height: 200,
),
SizedBox(height: 20),
ElevatedButton(
onPressed: selectImage,
child: Text('Select Image'),
),
],
),
),
);
}
}

output its take image but don't predict that this is cat or dog error got on console Unable to match the desired swap behavior.
E/flutter (29351): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: failed precondition