dapr/dapr · error

app channel for actor type %s is nil

Error message

app channel for actor type %s is nil

What it means

Error "app channel for actor type %s is nil" thrown in dapr/dapr.

Source

Thrown at pkg/actors/targets/app/transport/http/http.go:97

	msg := imReq.Message()
	originalMethod := msg.GetMethod()
	cleanedMethod, err := method.NormalizeMethod(msg.GetMethod())
	if err != nil {
		return nil, fmt.Errorf("invalid method name: %w", err)
	}
	msg.Method = "actors/" + t.actorType + "/" + actorID + "/method/" + cleanedMethod
	defer func() {
		msg.Method = originalMethod
	}()

	if msg.GetHttpExtension() == nil {
		req.WithHTTPExtension(http.MethodPut, "")
	} else {
		msg.HttpExtension.Verb = commonv1pb.HTTPExtension_PUT //nolint:nosnakecase
	}

	if t.appChannel == nil {
		return nil, fmt.Errorf("app channel for actor type %s is nil", t.actorType)
	}

	policyDef := t.resiliency.ActorPostLockPolicy(t.actorType, actorID)
	if policyDef != nil && policyDef.HasRetries() {
		imReq.WithReplay(true)
	}

	policyRunner := resiliency.NewRunnerWithOptions(ctx, policyDef,
		resiliency.RunnerOpts[*invokev1.InvokeMethodResponse]{
			Disposer: resiliency.DisposerCloser[*invokev1.InvokeMethodResponse],
		},
	)
	imRes, err := policyRunner(func(ctx context.Context) (*invokev1.InvokeMethodResponse, error) {
		return t.appChannel.InvokeMethod(ctx, imReq, "")
	})
	if err != nil {
		return nil, err
	}

View on GitHub (pinned to 74ad417027)

When it happens

Trigger: Thrown at pkg/actors/targets/app/transport/http/http.go:97 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of dapr/dapr@74ad417027 (2026-08-16). Data as JSON: /api/errors/63f00fb621760352. Report an issue: GitHub.