Update app.py

app.py

@@ -13,7 +13,7 @@ nltk.download('punkt_tab')
 faiss_path="ubuntu_manual.txt"
 # Load the Ubuntu manual from a .txt file
 try:
-        with open(faiss_path, "r", encoding="utf-8") as file:
+        with open("ubuntu_manual.txt", "r", encoding="utf-8") as file:
         full_text = file.read()
 except FileNotFoundError:
     raise FileNotFoundError("The file ubuntu_manual.txt was not found.")