How to properly uploads files to certain api uisng curl in php - php

Question

Am trying to add/upload files to monday.com api via curl in php but the code throws error {"error_message":"Internal server error","status_code":500}
Monday Docs
here is the API Curl request
curl --location --request POST 'https://api.monday.com/v2/file' \
--header 'Authorization: YourSuperSecretAPIKey' \
--form 'query="mutation add_file($file: File!, $item_id: Int!, $column_id: String!) {add_file_to_column (item_id: $item_id, column_id: $column_id, file: $file) {id}}"' \
--form 'variables="{\"item_id\":1104589438, \"column_id\": \"files\"}"' \
--form 'map="{\"image\":\"variables.file\"}"' \
--form 'image=#"/Users/alexsavchuk/Downloads/300px-All_Right_Then,_Keep_Your_Secrets.jpg"'
Arguments Description of the API Variable
item_id !Int The item ID where the file will be added.
column_id !String The column where the file will be added.
file !File The file to upload.
Here is my coding efforts
$token = 'Token goes here';
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://api.monday.com/v2/file',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS => array('query' => 'mutation ($file: File!) { add_file_to_column(file: $file, item_id: 279111, column_id: "files") { id } }','variables[file]'=> new CURLFILE('https://cdn.pixabay.com/photo/2015/05/26/12/30/baby-784608_960_720.jpg')),
CURLOPT_HTTPHEADER => array('Authorization: ' . $token)));
$response = curl_exec($curl);
curl_close($curl);
echo $response;