Update app.py

app.py

@@ -2,7 +2,7 @@ import os
 import streamlit as st
 from langchain.llms import HuggingFaceHub
 from llm import similarity
-
+from file_manipulation import make_directory_if_not_exists
 
 from models import return_models, return_text2text_generation_models, return_task_name, return_text_generation_models
 class LLM_Langchain():
@@ -109,6 +109,7 @@ class LLM_Langchain():
             label="Upload PDF file",
             disabled=self.uploader_visibility
         )
+        make_directory_if_not_exists('assets/')
 
         if self.file_upload_status is not None:
             self.pdf_file_path = f"assets/{self.file_upload_status.name}"