nginx_http_response_time_seconds not exported

[undestroyer]

config

listen {
  port = 9090
  address = "192.168.0.4"
  metrics_endpoint = "/metrics"
}

namespace "grafana" {
  source = {
    files = [
      "/var/log/nginx/monitoring.access.log"
    ]
  }

  format = "$remote_addr - $remote_user [$time_local] \"$request\" $status $body_bytes_sent \"$http_referrer\" \"$http_user_agent\""

  histogram_buckets = [.005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10]

  metrics_override = { prefix = "nginx" }
  namespace_label = "app"

  relabel "request_uri" {
    from = "request"
    split = 2

    match "^(/[^?]{0,})*(.*)$" {
      replacement = "$1"
    }
  }
}

log example

188.255.55.84 - - [31/Dec/2023:08:40:25 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:40:31 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:40:45 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:40:52 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:40:59 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:41:20 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:41:36 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:41:47 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:41:59 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
188.255.55.84 - - [31/Dec/2023:08:42:13 +0000] "GET /api/live/ws HTTP/1.1" 400 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"

metrics export (truncated):

# HELP nginx_http_response_count_total Amount of processed HTTP requests
# TYPE nginx_http_response_count_total counter
nginx_http_response_count_total{app="grafana",method="GET",request_uri="/",status="302"} 3
nginx_http_response_count_total{app="grafana",method="GET",request_uri="/api/access-control/user/actions",status="200"} 2
nginx_http_response_count_total{app="grafana",method="GET",request_uri="/api/annotations",status="200"} 46=
# HELP nginx_http_response_size_bytes Total amount of transferred bytes
# TYPE nginx_http_response_size_bytes counter
nginx_http_response_size_bytes{app="grafana",method="GET",request_uri="/",status="302"} 87
nginx_http_response_size_bytes{app="grafana",method="GET",request_uri="/api/access-control/user/actions",status="200"} 6668
nginx_http_response_size_bytes{app="grafana",method="GET",request_uri="/api/annotations",status="200"} 92=
# HELP nginx_parse_errors_total Total number of log file lines that could not be parsed
# TYPE nginx_parse_errors_total counter
nginx_parse_errors_total{app="grafana"} 0
# HELP prometheus_nginxlog_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, goversion from which prometheus_nginxlog_exporter was built, and the goos and goarch for the build.
# TYPE prometheus_nginxlog_exporter_build_info gauge
prometheus_nginxlog_exporter_build_info{branch="v1.11.0",goarch="amd64",goos="linux",goversion="go1.18.10",revision="76552e7cadc1f76b4e28b5c872412db4a091aca0",tags="unknown",version="1.11.0"} 1

Why there isn't nginx_http_response_time_seconds metric?