Node js file upload empty request in lumen

When i upload a file in Node JS, ajax request send to Lumen. But the request is empty.

This happen only on server, In my localhost working fine.

Please advice..

Ajax request :

uri: config.apiEndpoints.uploadStatement,
headers: {
    'Authorization': token
},
method: 'POST',
formData: {
    lender: "lender",
    product: "product",
    source: "statement",
    "document[]": formData[1].statement ? fs.createReadStream(formData[1].statement[0].path) : "",
    "document_key[]": formData[0].password[0],
} 

Lumen :

public function uploadstatement(Request $request)
{
  \Log::info(json_encode($request->all()));
  
  $basicRules = [
      'lender' => 'required|in:'.implode(',', config('api.lenderList')),
      'source' => 'required|in:'.implode(',',  config('api.sources'))
  ];
  $validator =  Validator::make($request->all(), $basicRules, [
      'lender.in' => 'Requested lender doesn\'t exist in our list',
      'source.in' => 'Requested source doesn\'t exist in our list'
  ]);
  if ($validator->fails()) {            
      return $this->showValidationResponse($validator->messages());
  }
}

via Chebli Mohamed