Update app.py

app.py

@@ -58,12 +58,14 @@ from langchain.schema import Document
 
 
 
-def langchain_document_loader(TMP_DIR):
+def langchain_document_loader():
     """
     Load documents from the temporary directory (TMP_DIR). 
     Files can be in txt, pdf, CSV or docx format.
     """
-
+    current_dir = os.getcwd()
+    TMP_DIR = current_dir
+    
     documents = []
 
     txt_loader = DirectoryLoader(