404 on certain files when forwarding to external host

Hi, we have a vendor product installed on a virtual machine running Centos 7, php and apache. Certain files on the page results in 404. Any help would be appreciated. I have setup a rules.toml file to forward to this virtual machine. Configuration below. I've changed our wildcard cert and domain to example.com

Any help would be appreciated

docker-compose.yml

version: "3"

services:
  traefik:
    image: traefik:alpine
    labels:
      - traefik.frontend.rule=Host:traefik.example.com
      - traefik.port=8080
      - traefik.enable=true
    container_name: "traefik"
    ports:
      - 80:80
      - 443:443
      - 8080:8080
    networks:
      - web
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ./cert:/cert
      - ./rules.toml:/rules.toml
      - ./traefik.toml:/traefik.toml:ro

networks:
  web:
    external: true

rules.toml

[frontends]
  [frontends.demo-ent-05-example.com]
  backend = "demo-ent-05-example.com"
    [frontends.demo-ent-05-example.com.routes.route-ext]
    rule = "Host:cf-hq-demo-ent-05.example.com"

[backends]
  [backends.demo-ent-05-example.com]
    [backends.demo-ent-05-example.com.servers.server-ext]
    url = "http://10.132.1.13:80"
    weight = 1

traefik.toml

defaultEntryPoints = ["http", "https"]
logLevel = "DEBUG"

[docker]
  endpoint = "unix:///var/run/docker.sock"
  exposedByDefault = false
  network = "web"
  watch = true
  domain = "example.com"

# enabling api is not absolutely necessary, it is needed only if you need dashboard.
[api]
  dashboard = true
  entrypoint = "dashboard"


[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
    entryPoint = "https"

  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [[entryPoints.https.tls.certificates]]
      certFile = "/cert/server.crt"
      keyFile = "/cert/server.key"


  [entryPoints.dashboard]
  address = ":8080"
[accessLog]
  filePath= "/access.log"
  bufferingSize = 100

[file]
  filename = "rules.toml"
  watch = true