emberjs/ember.js · error · Error

Found a helper manager, but it was an internal built-in help

Error message

Found a helper manager, but it was an internal built-in helper manager. `invokeHelper` does not support internal helpers yet.

What it means

Error "Found a helper manager, but it was an internal built-in helper manager. `invokeHelper` does not support internal helpers yet." thrown in emberjs/ember.js.

Source

Thrown at packages/@glimmer/runtime/lib/helpers/invoke.ts:64

////////////

export function invokeHelper(
  context: object,
  definition: object,
  computeArgs?: (context: object) => Partial<Arguments>
): Cache {
  if (DEBUG && (typeof context !== 'object' || context === null)) {
    throw new Error(
      `Expected a context object to be passed as the first parameter to invokeHelper, got ${context}`
    );
  }

  const owner = getOwner(context);

  const internalManager = getInternalHelperManager(definition);

  if (DEBUG && typeof internalManager === 'function') {
    throw new Error(
      'Found a helper manager, but it was an internal built-in helper manager. `invokeHelper` does not support internal helpers yet.'
    );
  }

  const manager = (internalManager as InternalHelperManager<object>).getDelegateFor(owner);
  let args = new SimpleArgsProxy(context, computeArgs);
  let bucket = manager.createHelper(definition, args);

  let cache: Cache;

  if (hasValue(manager)) {
    cache = createCache(() => {
      if (DEBUG && (isDestroying(cache) || isDestroyed(cache))) {
        throw new Error(
          `You attempted to get the value of a helper after the helper was destroyed, which is not allowed`
        );
      }

View on GitHub (pinned to 26f97246a8)

When it happens

Trigger: Thrown at packages/@glimmer/runtime/lib/helpers/invoke.ts:64 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of emberjs/ember.js@26f97246a8 (2026-09-01). Data as JSON: /api/errors/4395c93cbed02fc8. Report an issue: GitHub.