A cache instance was released after it was already freed. Th

Error message

A cache instance was released after it was already freed. This likely indicates a bug in React.

What it means

Error "A cache instance was released after it was already freed. This likely indicates a bug in React." thrown in facebook/react.

Source

Thrown at packages/react-reconciler/src/ReactFiberCacheComponent.js:107

export function retainCache(cache: Cache) {
  if (__DEV__) {
    if (cache.controller.signal.aborted) {
      console.warn(
        'A cache instance was retained after it was already freed. ' +
          'This likely indicates a bug in React.',
      );
    }
  }
  cache.refCount++;
}

// Cleanup a cache instance, potentially freeing it if there are no more references
export function releaseCache(cache: Cache) {
  cache.refCount--;
  if (__DEV__) {
    if (cache.refCount < 0) {
      console.warn(
        'A cache instance was released after it was already freed. ' +
          'This likely indicates a bug in React.',
      );
    }
  }
  if (cache.refCount === 0) {
    scheduleCallback(NormalPriority, () => {
      cache.controller.abort();
    });
  }
}

export function pushCacheProvider(workInProgress: Fiber, cache: Cache) {
  pushProvider(workInProgress, CacheContext, cache);
}

export function popCacheProvider(workInProgress: Fiber, cache: Cache) {
  popProvider(CacheContext, workInProgress);

View on GitHub (pinned to eafeac097b)

When it happens

Trigger: Thrown at packages/react-reconciler/src/ReactFiberCacheComponent.js:107 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of facebook/react@eafeac097b (2026-08-21). Data as JSON: /api/errors/5f329c61c3957231. Report an issue: GitHub.