more extensive error handling

tabs/chat.py

@@ -11,6 +11,15 @@ def load_chatbot(chatbot_id):
     logger.info(f"Attempting to load chatbot with ID: {chatbot_id}")
     try:
         chatbot = get_chatbot(chatbot_id)
+    except Exception as e:
+        logger.error(f"Error loading chatbot {chatbot_id}: {str(e)}")
+        return (
+            gr.update(value="# Chatbot\n\nWillkommen beim Chatbot"),
+            gr.update(value="", visible=True),
+            gr.update(value=""),
+            gr.update(value=f"Ein Fehler ist aufgetreten: {str(e)}")
+        )
+    try:
         if chatbot:
             logger.info(f"Chatbot {chatbot_id} loaded successfully")
             return (
@@ -27,7 +36,7 @@ def load_chatbot(chatbot_id):
             gr.update(value="Ungültige Chatbot-ID oder Chatbot nicht aktiv.")
         )
     except Exception as e:
-        logger.error(f"Error loading chatbot {chatbot_id}: {str(e)}")
+        logger.error(f"Error filling chatbot fields for {chatbot_id}: {str(e)}")
         return (
             gr.update(value="# Chatbot\n\nWillkommen beim Chatbot"),
             gr.update(value="", visible=True),
@@ -43,12 +52,14 @@ def load_chatbot_with_timeout(chatbot_id, timeout=5):
             return result
         except concurrent.futures.TimeoutError:
             logger.error(f"Timeout while loading chatbot {chatbot_id}")
-            return (
+            result = (
                 gr.update(value="# Chatbot\n\nWillkommen beim Chatbot"),
                 gr.update(value="", visible=True),
                 gr.update(value=""),
                 gr.update(value="Zeitüberschreitung beim Laden des Chatbots.")
             )
+            gr.refresh()  # Force UI refresh
+            return result
         except Exception as e:
             logger.error(f"Unexpected error while loading chatbot {chatbot_id}: {str(e)}")
             return (