422 Unprocessable Entity when posting to Laravel

Question

I cannot figure out how to solve this.

Response is showing me Content-Type: application/json instead of multipart/form-data....

did anyone know what i need to do?

I build in .net 6 MAUI, Android 12 and RestSharp as http client

Please give a look on this image: (IMAGE) Response StatusCode

var client = new RestClient();
var request = new RestRequest(PostImageUrl, Method.Post);
request.AddHeader("Content-Type", "multipart/form-data");
request.AddFile("image", bauzeichnung);
var response = client.Execute(request);

Everything is tested with Postman and works like expected.

EDIT also tried:

 request.AlwaysMultipartFormData = true;

Is this Directory Path correct? "/data/user/0/com.Lippert.Digital/cache/b81fe7a766a64981918f1012d7865c8c.jpg"

Can AddFile work with this type of path from my Android phone? This picture was taken with MediaPicker.Default.CapturePhotoAsync();

(IMAGE) Directory Path

EDIT

PHP Controller

    public function uploadImage(Request $request)
{
    $this->validate($request, [
        'image'     => 'file',
    ]);

    
    if ($request->file('image')) 
    {
        $name = time().$request->file('image')->getClientOriginalName();
        $request->file('image')->move('Bauzeichnungen',$name);

        $image = url('Bauzeichnungen/'.$name);
        
    }else
    {   
        $image = 'Image not found';
       
    }
    date_default_timezone_set('Europe/Berlin');
    DB::table('Bauzeichnung')->insert([  
        'image' => "$image",
        'erstellt_von' => 26,
        'aktualisiert_von' => 26,
        'Zeitstempel' => date('Y-m-d H:i:s'),
    ]);
    
}

PHP Route

Route::post('/uploadImage','ImageController@uploadImage');

Answer 1

422 Unprocessable Entity - Solution

After couple of days i found the Solution for the error above...

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The reason for that:

Images are too big and only smaller values were allowed in php.ini.

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How it can be solved:

1. open your php.ini - (location: /etc/php/8.1/fpm/php.ini)

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2. set memory_limit = (i set to -1)

Sets the maximum amount of memory, in bytes, that a script can use. This can be used to prevent badly written scripts from "eating up" all of the available memory on a server. To set no memory limit, set this directive to the value -1.

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3. Set post_max_size = (i set to 128M)

Sets the maximum allowed size of POST data. This option also affects file upload. To upload larger files, the value must be greater than upload_max_filesize . In general, memory_limit should be greater than post_max_size. If an int value is used, that value is measured in bytes. You can also use the shorthand form as described in this FAQ . If the size of the POST data is greater than post_max_size, the $_POST and $_FILES superglobals become to be empty. This can be tracked in a number of ways, e.g. B. by passing the $_GET variable to the script that processes the data, ie and then checking if $_GET['processed'] is set.

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4. Set upload_max_filesize = (i set to 64M)

The maximum size that an uploaded file can have.

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Where i got the Information - PHP Manual: https://www.php.net/manual/de/ini.core.php

Big thanks to : @Jason