Force debug mode for this endpoint in the demo environment

Thanks to @freekmurze for confirming this is safe, and won't expose any environment variables

routes/web.php

@@ -54,5 +54,10 @@ Route::get('reports')->name('reports')->uses('ReportsController')->middleware('a
 
 // 500 error
 Route::get('500', function () {
+    // Force debug mode for this endpoint in the demo environment
+    if (App::environment('demo')) {
+        Config::set('app.debug', true);
+    }
+
     echo $fail;
 });