fix

app/Providers/RouteServiceProvider.php

@@ -45,7 +45,7 @@ class RouteServiceProvider extends ServiceProvider
             Route::middleware('web')
                 ->group(base_path('routes/web.php'));
 
-            if (app()->environment('local') && file_exists(base_path('routes/api_private.php'))) {
+            if (file_exists(base_path('routes/api_private.php'))) {
                 Route::middleware('api')
                     ->prefix('api')
                     ->group(base_path('routes/api_private.php'));