Telescope - Duration not showing on client requests

It sounds like you've already done a lot of troubleshooting, which is great. Here are a few additional steps you can take to try to resolve the issue with the duration not showing in Laravel Telescope:

1. Check Telescope Configuration: Ensure that the telescope.php configuration file is correctly set up in both applications. Specifically, check if there are any differences in the watchers array that might affect the recording of request durations.

   // config/telescope.php
   'watchers' => [
       Watchers\RequestWatcher::class => [
           'enabled' => env('TELESCOPE_REQUEST_WATCHER', true),
           'size_limit' => env('TELESCOPE_REQUEST_WATCHER_SIZE_LIMIT', 64),
       ],
       // other watchers...
   ],
   

2. Middleware: Verify that the TelescopeMiddleware is correctly applied in both applications. This middleware is responsible for collecting request data.

   // app/Http/Kernel.php
   protected $middleware = [
       // other middleware...
       \Laravel\Telescope\Http\Middleware\Authorize::class,
   ];
   

3. Database Schema: Ensure that the database schema for the telescope_entries table is identical in both applications. Specifically, check that the duration column exists and is of the correct type.

   Schema::create('telescope_entries', function (Blueprint $table) {
       $table->bigIncrements('id');
       $table->string('batch_id');
       $table->string('family_hash')->nullable();
       $table->string('should_display_on_index')->default(true);
       $table->string('type');
       $table->text('content');
       $table->unsignedInteger('duration')->nullable();
       $table->timestamps();
   });
   

4. Clear Cache: Sometimes, configuration or route caches can cause issues. Clear the caches to ensure that the latest configurations are being used.

   php artisan config:cache
   php artisan route:cache
   php artisan view:cache
   php artisan cache:clear
   

5. Update Telescope: Ensure that both applications are using the same version of Laravel Telescope. You can update Telescope using Composer.

   composer require laravel/telescope
   

6. Check Telescope Service Provider: Ensure that the TelescopeServiceProvider is correctly registered in both applications.

   // app/Providers/TelescopeServiceProvider.php
   use Laravel\Telescope\Telescope;
   use Laravel\Telescope\TelescopeApplicationServiceProvider;
   
   class TelescopeServiceProvider extends TelescopeApplicationServiceProvider
   {
       // ...
   }
   

7. Debugging: Add some debugging statements in the TelescopeServiceProvider to log or dump the request data to ensure that the duration is being captured correctly.

   // app/Providers/TelescopeServiceProvider.php
   use Laravel\Telescope\IncomingEntry;
   
   public function register()
   {
       Telescope::filter(function (IncomingEntry $entry) {
           if ($entry->type === 'request') {
               \Log::info('Request Duration: ' . $entry->content['duration']);
           }
           return true;
       });
   }
   

By following these steps, you should be able to identify and resolve the issue with the duration not showing in Laravel Telescope. If the problem persists, consider comparing the entire Telescope configuration and setup between the two applications to identify any discrepancies.