TLS options ... Traefik error in dashboard

Traefik Traefik v3 (latest)
1

Sorry but those are not my days with Traefik, definitely! :frowning:

The following is my tis-opts.yml file:

tls:
  options:
    tls-opts:
      minVersion: VersionTLS12
      cipherSuites:
        - TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
        - TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
        - TLS_AES_128_GCM_SHA256
        - TLS_AES_256_GCM_SHA384
        - TLS_CHACHA20_POLY1305_SHA256
        - TLS_FALLBACK_SCSV # Client is doing version fallback. See RFC 7507
      curvePreferences:
        - CurveP521
        - CurveP384
      sniStrict: true

and this the log I get from Traefik:

2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/middlewares/recovery/recovery.go:25 > Creating middleware entryPointName=traefik middlewareName=traefik-internal-recovery middlewareType=Recovery
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/middlewares/redirect/redirect_scheme.go:29 > Creating middleware entryPointName=web middlewareName=redirect-web-to-websecure@internal middlewareType=RedirectScheme routerName=web-to-websecure@internal
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/middlewares/redirect/redirect_scheme.go:30 > Setting up redirection to https 443 entryPointName=web middlewareName=redirect-web-to-websecure@internal middlewareType=RedirectScheme routerName=web-to-websecure@internal
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/middlewares/recovery/recovery.go:25 > Creating middleware entryPointName=web middlewareName=traefik-internal-recovery middlewareType=Recovery
2025-07-03T16:51:21+02:00 ERR github.com/traefik/traefik/v3/pkg/server/router/router.go:135 > error="building router handler: unknown TLS options: tls-opts@file" entryPointName=websecure routerName=traefik-rtr@docker
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/middlewares/recovery/recovery.go:25 > Creating middleware entryPointName=websecure middlewareName=traefik-internal-recovery middlewareType=Recovery
2025-07-03T16:51:21+02:00 ERR github.com/traefik/traefik/v3/pkg/server/router/tcp/manager.go:191 > error="unknown TLS options: tls-opts@file" entryPointName=websecure routerName=traefik-rtr@docker
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/server/router/tcp/manager.go:232 > Adding special closing route for traefik.sweet.home because broken TLS options tls-opts@file entryPointName=websecure
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/provider/acme/provider.go:946 > Looking for provided certificate(s) to validate ["sweet.home" "*.sweet.home"]... ACME CA=https://acme-v02.api.letsencrypt.org/directory acmeCA=https://acme-v02.api.letsencrypt.org/directory providerName=dns-cloudflare.acme
2025-07-03T16:51:21+02:00 DBG github.com/traefik/traefik/v3/pkg/provider/acme/provider.go:990 > No ACME certificate generation required for domains ACME CA=https://acme-v02.api.letsencrypt.org/directory acmeCA=https://acme-v02.api.letsencrypt.org/directory domains=["sweet.home","*.sweet.home"] providerName=dns-cloudflare.acme

I'm pretty sure this has not happened in the past, before the last upgrade (v. 3.4.3) ... but I'm pretty clueless in finding a proper solution...

2

probably means that the loading of the dynamic config file failed. But for that you would need to share your full Traefik static and dynamic config.

3

I've partially solved the matter. My fault: I forgot one "-" in one of the dynamic file providers and everything stopped because of that.