Can't perform a React state update on an unmounted component

🔧 Verified Code Patch Copy Diff

@@ -1,4 +1,4 @@
+ let isMounted = true;
+ fetch().then(d => { if (isMounted) setData(d); });
+ return () => { isMounted = false; };

🤖 Direct Machine API Query (Sub-50ms)

curl -X POST https://agentnow.in/api/v1/query \
  -H "Content-Type: application/json" \
  -d '{"error": "Can't perform a React state update on an unmounted component"}'

📚 Related React 19 Verified Fixes

View all 5 patches in React 19 →