fix: theme error

app.py

@@ -70,7 +70,7 @@ interface = gr.ChatInterface(
     title="🚑 HACK_DOC AI",
     description="I am a specialized medical assistant. Ask me about symptoms!",
     examples=["I have a sharp pain in my chest.", "What should I take for a fever?", "My skin is itchy and red."],
-    theme="soft"
+    # theme="soft"
 )
 
 # 4. Launch