Assume reasonable default if called without parameter

src/gpt_langchain.py

@@ -9435,6 +9435,10 @@ def _update_user_db(file,
             raise ValueError("Public instance only allows up to"
                              " %d (%d from API) documents updated at a time." % (max_docs_public, max_docs_public_api))
 
+    if is_url is None and is_url is None and file:
+        # assume add_button action if not set
+        is_url = True
+
     if langchain_mode == LangChainMode.DISABLED.value:
         return None, langchain_mode, get_source_files(), "", None, {}
 

src/version.py

@@ -1 +1 @@
-__version__ = "c807a38f645b6e37b575bb045c310da1fcd4e330"
+__version__ = "b58d79eaad96dd44f4a0dc1008e29e8ade1288a8"