LateInitializationError: Field '_image@785213298' has not been initialized. in flutter?

i am working with flutter project and uploading a image file to mysql server but on the screen i get this error:

LateInitializationError: Field ‘_image@785213298’ has not been initialized.

and this is the code which i am using:

late File _image;

Future choiceImage() async{

final picker=ImagePicker();

var pickedImage= await picker.getImage(source: ImageSource.gallery);
setState(() {
  _image=File(pickedImage!.path);
});
   }

Future choice2Image() async{

final picker=ImagePicker();

var pickedImage= await picker.getImage(source: ImageSource.camera);
setState(() {
  _image=File(pickedImage!.path);
});
}

Future uploadImage() async{
final uri=Uri.parse("https://www.example.com/driverapp-apis");
var request =http.MultipartRequest('POST',uri);
request.fields['id']=widget.id.toString();
request.fields['licence']=licenseController.text;
request.fields['expiry']=expiryController.text;
request.fields['action']="updateDocs";
var pic =await http.MultipartFile.fromPath("image", _image.path);
request.files.add(pic);
var response=await request.send();

if (response.statusCode==200){
  print("image uploaded");
  Navigator.push(
    context,
    MaterialPageRoute(
      builder: (context) => aadharCardScreen(widget.id),
    ),
  );
}
else{
  print("image not uploaded");
}
}

and also selcting file with buttons:

onPressed: () {
                  choice2Image();
                },

and

 onPressed: () {
                  choiceImage();
                },`

and also showing the selected image in container:

Container(
            child: Image.file(
              _image,
              fit: BoxFit.cover,
            ),
          ),

i know that is late initialization which states that variable i never initialized but it gets its value after choosing photo or taking photos, what i am doing wrong?

thanks in advance.

>Solution :

Instead of

late File _image;

set

File? _image;

Container(
   child: _image != null? Image.file(
        _image,
              fit: BoxFit.cover,
            ) : const SizedBox(),
         ),

and uploadImage() if _image != null