i have this error when i trying use the update component with my app, and i don't know, why is that error

Error:

TypeError: Spread syntax requires ...iterable[Symbol.iterator] to be a function

    at HttpHeaders.applyUpdate (http.mjs:244:22)

    at http.mjs:211:56

    at Array.forEach (<anonymous>)

    at HttpHeaders.init (http.mjs:211:33)

    at HttpHeaders.forEach (http.mjs:274:14)

    at Observable._subscribe (http.mjs:1811:25)

    at Observable._trySubscribe (Observable.js:37:25)

    at Observable.js:31:30

    at errorContext (errorContext.js:19:9)

    at Observable.subscribe (Observable.js:22:21)

And this is the code of my app, i use Laravel 9 in the Back-end, but the problem appears to me as if it were from the front, just in case i leave the code from back at the end

**UpdateComponent.ts: **

onSubmit(form:any){

    this._userService.update(this.token, this.user).subscribe(

      response => { 

        console.log(response)

      },

      error => {

        this.status = 'error'

        console.log(error)

      }

    )

  }

ModelUser.ts:

export class User{

    constructor(

        public id: number,

        public name: string,

        public surname: string,

        public role: string,

        public email: string,

        public password: string,

        public description: string,

        public image: string

    ){}

}

UserService.ts

update(token:any, user:any):Observable<any>{

        let json = JSON.stringify(user)

        let params = 'json=' + json

        let headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded').set('Authorization', token)



        return this._http.put(this.url + 'user/update', params, { headers: headers })

    }

UserController/update.php

 public function update(Request $request){

        

        //Recoger los datos por POST

        $json = $request->input('json', null);

        $params_array = json_decode($json, true);



        if($checkToken && !empty($params_array)){

            //Sacar usuario identificado

            $user = $jwtAuth->checkToken($token, true);



            //Validar los datos

            $validate = Validator::make($params_array, [

                'name' => 'required|alpha',

                'surname' => 'required|alpha',

                'email' => 'required|email|unique:users,'.$user->sub

            ]);



            //Quitar los campos que no se actualizan

            unset($params_array['id']);

            unset($params_array['role']);

            unset($params_array['password']);

            unset($params_array['created_at']);

            unset($params_array['remember_token']);



            //Actualizar el usuario en la DB

            $user_update = User::where('id', $user->sub)->update($params_array);



            //Devolver array con resultado

            $data = array(

                'code' => 200,

                'status' => 'success',

                'user' => $user,

                'changes' => $params_array

            );

        }else{

            $data = array(

                'code' => 400,

                'status' => 'error',

                'message' => 'Usuario no identificado'

            );

        }



        return response()->json($data, $data['code']);

    }