postgreql proxy crashes

[tetra12]

Hi I'm using Caddy-L4 to proxy PostgreSQL access. It works fine for some time (around 2 days) and then crashes. I have no idea how to debug this, just attaching an error report.

Nov 02 18:06:25 hyp0 caddy[1997329]:         /home/bku/work/go/pkg/mod/github.com/mholt/caddy-l4@v0.0.0-20241012124037-5764d700c21c/layer4/routes.go:156 +0x6>
Nov 02 18:06:25 hyp0 caddy[1997329]: github.com/mholt/caddy-l4/layer4.HandlerFunc.Handle(0x21c2138?, 0xc0008c0000?)
Nov 02 18:06:25 hyp0 caddy[1997329]:         /home/bku/work/go/pkg/mod/github.com/mholt/caddy-l4@v0.0.0-20241012124037-5764d700c21c/layer4/handlers.go:61 +0x>
Nov 02 18:06:25 hyp0 caddy[1997329]: github.com/mholt/caddy-l4/layer4.(*Server).handle(0xc000401260, {0x21c2138, 0xc0008c0000})
Nov 02 18:06:25 hyp0 caddy[1997329]:         /home/bku/work/go/pkg/mod/github.com/mholt/caddy-l4@v0.0.0-20241012124037-5764d700c21c/layer4/server.go:173 +0x1>
Nov 02 18:06:25 hyp0 caddy[1997329]: created by github.com/mholt/caddy-l4/layer4.(*Server).serve in goroutine 199
Nov 02 18:06:25 hyp0 caddy[1997329]:         /home/bku/work/go/pkg/mod/github.com/mholt/caddy-l4@v0.0.0-20241012124037-5764d700c21c/layer4/server.go:91 +0x27c
Nov 02 18:06:25 hyp0 systemd[1]: caddy.service: Main process exited, code=exited, status=2/INVALIDARGUMENT

Caddy: v2.8.4
Caddy-L4: v0.0.0-20241102143510-d8ba3fbdf35c
PostreSQL: 16.4
OS: Ubuntu 24.04.1

Caddyfile

{
  admin off
    layer4 {
    :55021 {
      @a postgres
      route @a {
        proxy {$DEV_KUBE_IP}:30000
      }
    }
  }
}