Fix: Add error handling around Gradio Blocks creation

app.py

@@ -666,14 +666,24 @@ def create_interface(initial_bot: RAGBot, use_inference_api: bool = False) -> gr
     if initial_model_short is None:
         initial_model_short = list(MODEL_MAP.keys())[0]
     
-    with gr.Blocks(title="CGT-LLM-Beta RAG Chatbot") as demo:
-        gr.Markdown("""
-        # 🧬 CGT-LLM-Beta: Genetic Counseling RAG Chatbot
-        
-        Ask questions about genetic counseling, cascade genetic testing, hereditary cancer syndromes, and related topics.
-        
-        The chatbot uses a Retrieval-Augmented Generation (RAG) system to provide evidence-based answers from medical literature.
-        """)
+    # Create the Gradio interface with error handling
+    try:
+        with gr.Blocks(title="CGT-LLM-Beta RAG Chatbot") as demo:
+            gr.Markdown("""
+            # 🧬 CGT-LLM-Beta: Genetic Counseling RAG Chatbot
+            
+            Ask questions about genetic counseling, cascade genetic testing, hereditary cancer syndromes, and related topics.
+            
+            The chatbot uses a Retrieval-Augmented Generation (RAG) system to provide evidence-based answers from medical literature.
+            """)
+    except Exception as blocks_error:
+        logger.error(f"Error creating Gradio Blocks: {blocks_error}", exc_info=True)
+        # Create a minimal fallback
+        with gr.Blocks(title="CGT-LLM-Beta RAG Chatbot") as demo:
+            gr.Markdown(f"# Error\n\nFailed to create interface: {blocks_error}")
+        return demo
+    
+    try:
         
         with gr.Row():
             with gr.Column(scale=2):
@@ -836,7 +846,29 @@ def create_interface(initial_bot: RAGBot, use_inference_api: bool = False) -> gr
                 category_output
             ]
         )
+    except Exception as interface_error:
+        logger.error(f"Error setting up Gradio interface components: {interface_error}", exc_info=True)
+        import traceback
+        error_trace = traceback.format_exc()
+        # Create a minimal working demo
+        with gr.Blocks(title="CGT-LLM-Beta RAG Chatbot") as demo:
+            gr.Markdown(f"""
+            # ⚠️ Interface Setup Error
+            
+            An error occurred while setting up the interface components.
+            
+            **Error:** {str(interface_error)}
+            
+            **Traceback:**
+            ```
+            {error_trace[:1000]}...
+            ```
+            
+            Please check the logs for more details.
+            """)
+        return demo
     
+    logger.info("Gradio interface created successfully")
     return demo