I get a 404 error when he should not :laravel - php

Question

I developed an API and I have a problem with this page I add it in my route and always I get a 404 error I don't know why
this my controller:
class InsertPPictureController extends Controller
{
public function profilepicture (Request $request)
{
$input = $request->all();
$validator = Validator::make($input, [
'id_user'=> 'required',
'picture'=> 'image|nullable|max:1999'
] );
$user = User::findOrFail($request->id);
$user_id = $request->id ;
if($request->hasFile('picture')){
// Get filename with the extension
$filenameWithExt = $request->file('picture')->getClientOriginalName();
// Get just filename
$filename = pathinfo($filenameWithExt, PATHINFO_FILENAME);
// Get just ext
$extension = $request->file('picture')->getClientOriginalExtension();
// Filename to store
$fileNameToStore= $user_id.'.'.$extension;
// Upload Image
$path = $request->file('picture')->storeAs('public/profilepic', $fileNameToStore);
$user->pic_path = $fileNameToStore ;
$user->update();
} else {
$fileNameToStore = 'noimage';
}
return response()->json(' Success : User updated with success ',200);
}
}
and this is my api.php
Route::group(['middleware' => ['jwt.verify']], function() {
Route::get('logout', 'AuthController#logout');
Route::post('postcreditscards', 'CreditsCardsController#stockcards');
Route::get('getcreditscards', 'CreditsCardsController#index');
Route::get('getmybalance', 'MyBalanceController#index');
Route::get('getuserdata', 'AuthController#getuser');
Route::post('sendMoneyTransaction', 'MyBalanceController#updatebalance');
Route::post('isvalidnumber', 'AuthController#validnumber');
Route::post('updateuser', 'AuthController#updateuser');
Route::post('insertprofilepicture','InsertPPictureController#profilepicture');
});
all the pages work fine only this page doesn't work
Route::post('insertprofilepicture','InsertPPictureController#profilepicture');

Answer 1

You are getting 404 error because of the following line in you controller code:
$user = User::findOrFail($request->id);
The id you are providing, does not exist in your users table and as you are not catching the exception hence Laravel is returning a 404 response, which is actually ModelNotFoundException
Reference here
Go to : "Not Found Exceptions" section of the above link. Here is some lines from doc:
If the exception is not caught, a 404 HTTP response is automatically sent back to the user

Answer 2

echo '<pre>'.print_r($user,1);die();
just put in this line after the
$user = User::findOrFail($request->id);
line. i suggest you to check the data array pass to this controller. if it is pass, after line by line you can check.