Fix the bug that convertor.py could not be loaded

app.py

@@ -3,8 +3,9 @@ import os
 # 0. Immediately set the HF token from the secret
 os.environ["HUGGINGFACE_TOKEN"] = os.getenv("HF_TOKEN")
 
-from huggingface_hub import snapshot_download, hf_hub_download
+from huggingface_hub import snapshot_download
 import importlib.util
+import sys
 from pathlib import Path
 
 # 1. Download a snapshot of the private Space’s repo into a local cache directory
@@ -16,7 +17,10 @@ downloaded_dir = snapshot_download(
     cache_dir=str(cache_dir),
 )  # downloaded_dir is something like "private_space_cache/bobfu/WordDocxFormatConvertor"
 
-# 2. Load the main app script from the private repo
+# 2. Insert the private folder into sys.path so imports resolve correctly
+**sys.path.insert(0, str(downloaded_dir))  # Allow Python to import convertor from the same directory**
+
+# 3. Load the main app script from the private repo
 app_path = Path(downloaded_dir) / "app.py"
 spec = importlib.util.spec_from_file_location("private_app", str(app_path))
 private_app = importlib.util.module_from_spec(spec)