Update app.py

app.py

@@ -49,7 +49,7 @@ def fin_ext_bis(text):
 def upload_file_and_update_dropdown(file):
     if file is not None:
         # Save the file to the upload directory
-        file_path = os.path.join(PDF_FOLDER, os.path.basename(fileobj))
+        file_path = os.path.join(PDF_FOLDER, os.path.basename(file))
         shutil.copyfile(file.name, file_path)
         # Get the updated list of files
         files = os.listdir(PDF_FOLDER)