Update app.py

app.py

@@ -5,6 +5,25 @@ from functools import lru_cache
 import gradio as gr
 import torch
 
+# -------------------
+# Writable caches for HF + Gradio (fixes PermissionError in Spaces)
+# -------------------
+os.environ.setdefault("HF_HOME", "/data/.cache/huggingface")
+os.environ.setdefault("TRANSFORMERS_CACHE", "/data/.cache/huggingface/transformers")
+os.environ.setdefault("HF_HUB_CACHE", "/data/.cache/huggingface/hub")
+os.environ.setdefault("GRADIO_TEMP_DIR", "/data/gradio")
+os.environ.setdefault("GRADIO_CACHE_DIR", "/data/gradio")
+
+for p in [
+    "/data/.cache/huggingface/transformers",
+    "/data/.cache/huggingface/hub",
+    "/data/gradio",
+]:
+    try:
+        os.makedirs(p, exist_ok=True)
+    except Exception:
+        pass
+
 # Timezone (Python 3.9+)
 try:
     from zoneinfo import ZoneInfo
@@ -256,13 +275,13 @@ with gr.Blocks(theme=theme, css=custom_css) as demo:
         fn=chat_fn,
         type="messages",
         additional_inputs=[tz_box],
-        chatbot=gr.Chatbot(label="", show_label=False),  # removes teal bubble
+        chatbot=gr.Chatbot(label="", show_label=False, type="messages"),  # aligned type + no label
         examples=[
             ["What are the symptoms of hypertension?", ""],
             ["What are common drug interactions with aspirin?", ""],
             ["What are the warning signs of diabetes?", ""],
         ],
-        cache_examples=True,
+        cache_examples=False,  # prevent permission error in Spaces
     )
 
 if __name__ == "__main__":