Edited by the administrator, why does the page not respond when I write this? Where did I go wrong?

Question

public function editUser(Request $request) {                                                                                                                                       ‐                                                                                                                                                  as $key => $value ){      

  if (!empty($value)){                                                                                              

Answer 1

The program reported an error, and the error message can be seen in F12 network