refractor function so that, doesn't fail if config is null on import

src/download/classes/gallery.py

@@ -18,8 +18,10 @@ class Gallery:
         self.opt_args: str | Sequence[str] = ""
         self.command: list[str] = []
 
-    def generate_command(self, user: User = User(1), is_comic: bool = False) -> None:
+    def generate_command(self, user: User | None = None, is_comic: bool = False) -> None:
         """Generates a command string."""
+        if user is None:
+            user = User(1)
         if is_comic:
             configs = load_config_variables()
             directory = str(configs["comic"]["download-dir"])