Fix

app.py

@@ -40,7 +40,7 @@ def lexi_response(message, history):
     matched_q, (answer, explanation) = get_closest_match(message)
     history.append({"role": "user", "content": message})
     history.append({"role": "assistant", "content": answer})
-    return "", history, explanation, gr.update(visible=False)
+    return "", history, explanation, gr.update(value="", visible=False)
 
 def show_explanation(explanation):
     return gr.update(value=explanation or "No explanation available.", visible=True)

requirements.txt

@@ -1,3 +1,3 @@
-huggingface_hub==0.25.2
-sentence_transformers
-gradio
+gradio
+sentence-transformers
+torch