laravel - Error on POST Request -

i developing in laravel 5.3.

when reviewing routes, have following:

here indicates routes post. if in postman enter url (post), throw following error

the strangest thing on local server works fine, error occurred me on production server.

my code is:

api.php

route::group(['middleware' => ['api', 'auth:api']], function() { require_once 'routes/api/productroute.php'; 

});

routes/routes/api/userroute.php

<?php  route::post('user/authenticate', [     'as' => 'api.user.authenticate',     'uses' => 'api\usercontroller@authenticate' ]);  route::post('user/register', [     'as' => 'api.user.register',     'uses' => 'api\usercontroller@register' ]); 

/app/http/controllers/api/usercontroller.php

public function authenticate(request $request)     {         $credentials = $request->only('email', 'password');          if (auth::attempt($credentials)) {             $user = auth::user();              \db::table('oauth_access_tokens')                 ->where('user_id', $user->id)                 ->where('name', $request->platform)                 ->update(['revoked' => 1]);              $token = $user->createtoken($request->platform)->accesstoken;             return controller::apiresponse(1, compact('user', 'token'));         } else{             return controller::apiresponse(-1);         }     }