Fix Streamlit set_page_config order and print specific ImportError

chat_gui.py

@@ -4,6 +4,8 @@ import gc
 import re
 import os
 
+st.set_page_config(page_title="LLM Alignment Lab", layout="centered")
+
 # Check for MLX support (Apple Silicon ONLY)
 try:
     import mlx.core as mx
@@ -23,10 +25,9 @@ except (ImportError, ModuleNotFoundError):
             TextIteratorStreamer
         )
         from peft import PeftModel
-    except ImportError:
-        st.error("Missing cloud dependencies. Please check requirements.txt")
+    except ImportError as e:
+        st.error(f"Missing cloud dependencies: {e}. Please check requirements.txt")
 
-st.set_page_config(page_title="LLM Alignment Lab", layout="centered")
 
 # --- UI State ---
 if "messages" not in st.session_state: