Update app.py

app.py

@@ -188,7 +188,7 @@ def letterhead():
 
     try:
         file_name, file_data = get_file_by_id(chat_settings["letterheadFileId"])
-        current_directory = os.getcwd()
+        current_directory = os.path.dirname(os.path.abspath(__file__))
         full_letterhead_file_path = os.path.join(current_directory, "letterhead", file_name)
        
         full_letterhead_signature_path = None
@@ -221,7 +221,7 @@ def letterhead():
         
         update_file_record(file_data_json["data"][0]["id"], {"file_path": file_path})
         
-        current_directory = os.getcwd()
+        current_directory = os.path.dirname(os.path.abspath(__file__))
         file_deleting_directory_path = os.path.join(current_directory, "letterhead")
         delete_all_files(file_deleting_directory_path)