goharbor/harbor · error

Internal Server Error

Error message

Internal Server Error

What it means

Server misconfiguration response in the registryctl auth handler: the handler chain was built without any authenticator (a.authenticator == nil), which is an internal wiring error, not a client fault. The generic 500 Internal Server Error text is returned and the real cause is logged ('No authenticator found in registry controller').

Solutions

1. Check registryctl startup logs for the 'No authenticator found' entry to confirm this path
2. Verify the registryctl deployment wires an authentication handler (correct config/auth setup) and redeploy
3. This is not fixable client-side; report or correct the server configuration

When it happens

Trigger: Thrown at src/registryctl/handlers/handler.go:64 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• HTTP status errors: handling 4xx and 5xx responses — how to handle 4xx and 5xx responses properly.

AI-assisted analysis of goharbor/harbor@7b2fd08cc5 (2026-08-16). Data as JSON: /api/errors/feba6987e53620b8. Report an issue: GitHub.

Appendix: source

Thrown at src/registryctl/handlers/handler.go:64

type authHandler struct {
	authenticator auth.AuthenticationHandler
	handler       http.Handler
	insecureAPIs  map[string]bool
}

func newAuthHandler(authenticator auth.AuthenticationHandler, handler http.Handler, insecureAPIs map[string]bool) http.Handler {
	return &authHandler{
		authenticator: authenticator,
		handler:       handler,
		insecureAPIs:  insecureAPIs,
	}
}

func (a *authHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	if a.authenticator == nil {
		log.Errorf("No authenticator found in registry controller.")
		http.Error(w, http.StatusText(http.StatusInternalServerError),
			http.StatusInternalServerError)
		return
	}

	if a.insecureAPIs != nil && a.insecureAPIs[r.URL.Path] {
		if a.handler != nil {
			a.handler.ServeHTTP(w, r)
		}
		return
	}

	err := a.authenticator.AuthorizeRequest(r)
	if err != nil {
		log.Errorf("failed to authenticate request: %v", err)
		http.Error(w, http.StatusText(http.StatusUnauthorized),
			http.StatusUnauthorized)
		return
	}

View on GitHub (pinned to 7b2fd08cc5)