Traefik 2.1 Gateway Timeout on all routes

Traefik Traefik v2 (latest)
1

Traefik 2.1 Gateway Timeout on all routes.

What did you do?
traefik.yml

version: '2.4'

services:
  traefik:
    command:
      - --providers.docker
      - --providers.docker.exposedByDefault=false
    image: traefik:2.1
    ports:
      - 80:80
    volumes:
      - type: bind
        source: /var/run/docker.sock
        target: /var/run/docker.sock

Service docker-compose.yml

version: '2.4'

services:
  api:
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.my-api.rule=Host(`my.api.local`)"

What did you expect to see?

My API on my.api.local

What did you see instead?

504 Gateway Timeout

Output of traefik version: traefik:2.1

Version: 2.1.4
Codename: cantal
Go version: go1.13.7
Built: 2020-02-06T17:10:06Z
OS/Arch: linux/amd64