Portainer sub path with Traefik v2

Traefik Traefik v2
,
3

Hello,
Thanks for the reply, I have updated my question. the network is external

networks:
  traefik_public:
    external: true

Cert are generated by Traefik(Self-singed) and added Host rule in labels like below

...
- "traefik.http.routers.portainer.rule=Host(`192.168.0.120`) && PathPrefix(`/portainer`)"
...

Still getting 404. Because I'm using in LAN, I had to use IPs instead of hostname(dont have internal DNS)

I was able to do fine with Nginx like below

...
location /portainer/ {
    proxy_pass http://portainer:9000/;
    proxy_set_header Host $http_host;
}
...

I decided to migrate all service to Traefik