Flutter: Scanned 'Path' On Null - php

Question

I'm trying to upload an image taken using the image picker package to my localhost server using a PHP API.
When the picture is taken, a message in the debug console appears saying "scanned (some path) to null" and the image path isn't saved.
I'd be very grateful if anyone who knows anything about this fills me in on how I can fix it. thank you in advance!
Here's my Relevant code:
-(PHP Backend)inserting an image to the database:
include_once "../../api/patients/create_image.php";
if (
isset($_POST["id"])
) {
if (!empty($_FILES["file"]['name']) )
{
$image = uploadImage("file", '../images/', 200,600);
$img_image = $image["image"];
}
else{
$img_image = "";
}
$id = $_POST["id"];
$insertArray = array();
array_push($insertArray, htmlspecialchars(strip_tags($img_image)));
array_push($insertArray, htmlspecialchars(strip_tags($id)));
$sql = "insert into patient_images (image, file_id) values (?,?)";
$result = dbExec($sql, $insertArray);
$resJson = array("result" => "success", "code" => 200, "body" => $insertArray);
echo json_encode($resJson, JSON_UNESCAPED_UNICODE);
} else {
//bad request
$resJson = array("result" => "fail", "code" => "400");
echo json_encode($resJson, JSON_UNESCAPED_UNICODE);
}
unction uploadImage($inputName, $uploadDir , $thumbnail_width , $image_width)
{
$image = $_FILES[$inputName];
//echo "error " . $image['name'] . $image['tmp_name'] . "end;";
$imagePath = '';
$thumbnailPath = '';
// echo "before";
// if a file is given
if (trim($image['tmp_name']) != '') {
$ext = substr(strrchr($image['name'], "."), 1); //$extensions[$image['type']];
// generate a random new file name to avoid name conflict
$imagePath = md5(rand() * time()) . ".$ext";
list($width, $height, $type, $attr) = getimagesize($image['tmp_name']);
// make sure the image width does not exceed the
// maximum allowed width
if ($width > $image_width) {
// echo "after";
$result = createThumbnail($image['tmp_name'], $uploadDir . $imagePath, $image_width);
$imagePath = $result;
} else {
$result = move_uploaded_file($image['tmp_name'], $uploadDir . $imagePath);
}
if ($result) {
// create thumbnail
$thumbnailPath = md5(rand() * time()) . ".$ext";
$result = createThumbnail($uploadDir . $imagePath, $uploadDir . $thumbnailPath, $thumbnail_width);
// create thumbnail failed, delete the image
if (!$result) {
unlink($uploadDir . $imagePath);
$imagePath = $thumbnailPath = '';
} else {
$thumbnailPath = $result;
}
} else {
// the product cannot be upload / resized
$imagePath = $thumbnailPath = '';
}
}
return array('image' => $imagePath, 'thumbnail' => $thumbnailPath);
}
(Front-end):
Future<bool> uploadFile(File imageFile, String id) async {
var stream = http.ByteStream(DelegatingStream.typed(imageFile.openRead()));
var length = await imageFile.length();
var uri = Uri.parse(path_api + 'patients/insertImage.php');
print(uri.path);
var request = http.MultipartRequest('POST', uri);
var multiPartFile = http.MultipartFile('file', stream, length,
filename: basename(imageFile.path));
request.fields['id'] = id;
request.files.add(multiPartFile);
var response = await request.send();
if (response.statusCode == 200) {
print('ok');
} else {
print('nope');
}
}
Future getImageCamera() async {
var image = await picker.pickImage(source: ImageSource.camera);
setState(
() {
if (image != null) {
_image = File(image.path);
} else {
print('no image selected');
}
},
);
}