Yii2 how to accept files from users?

Question

Yii

After accepting the files, an error pops up "You must enter a required id parameter" I read the code, everything seems to be correct, tell me where the error is ..
public function actionUpdate($id)
{
$model = $this->findModel($id);
if ($model->load(Yii::$app->request->post()) && $model->save()) {
$model->image = UploadedFile::getInstance($model, 'image') ;
if( $model->image ){
$model->upload();
}
return $this->redirect(['view', 'id' => $model->id]);
} else {
return $this->render('update', [
'model' => $model,
]);
}
}
public function upload(){
if($this->validate()){
$path = 'upload/store/' . $this->image->baseName . '.' . $this->image->extension;
$this->image->saveAs($path);
return true;
}else{
return false;
}
}
<?= $form->field($model, 'image')->fileInput() ?>

Answer 1

actionUpdate($id){}
requires an id parameter, which is most likely not passed to the server