GeneratorCommand requires filesystem (#27242)

Author: Nguyễn Xuân Quỳnh

src/Illuminate/Console/composer.json

@@ -32,7 +32,8 @@
     },
     "suggest": {
         "dragonmantank/cron-expression": "Required to use scheduling component (^2.0).",
-        "guzzlehttp/guzzle": "Required to use the ping methods on schedules (^6.0)."
+        "guzzlehttp/guzzle": "Required to use the ping methods on schedules (^6.0).",
+        "illuminate/filesystem": "Required to use the generator command (5.8.*)"
     },
     "config": {
         "sort-packages": true