Update app.py

app.py

@@ -180,6 +180,9 @@ def create_stock_chart(stock_data, symbol):
     except Exception as e:
         print(f"Error creating chart: {e}")
         return None
+@app.route('/healthz')
+def health_check():
+    return 'ok'
 
 @app.route('/')
 def index():