Traefik 1.7 "X-Frame-Options" HTTP Header Not Configured to Value "SAMEORIGIN"

Hello. I have Traefik proxy 1.7 on docker provider. And Nextcloud get same error
"X-Frame-Options" HTTP Header Not Configured to Value "SAMEORIGIN"
But in my docker-compose file I have label

  • "traefik.frontend.header.customFrameOptionValue=SAMEORIGIN"
    for nextcloud container. But this doesn't change the situation with error.