Update app.py

app.py

@@ -1,3 +1,4 @@
+import os
 import streamlit as st
 from QA_Bot import QA_Bot
 from PDF_Reader import PDF_4_QA
@@ -34,6 +35,8 @@ def main():
     
     if uploaded_file is not None and api_input is not None:
         save_folder = 'docs/'
+        if not os.path.isdir(save_folder):
+            os.makedir(save_folder)
         save_path = Path(save_folder, uploaded_file.name)
         with open(save_path, mode='wb') as w:
             w.write(uploaded_file.getvalue())