.event.referer_route' should be equal to one of the allowed values

{
"http": {
  "request_headers": {"user-agent":"redacted"},
  "client_ip":"127.0.0.1"
},
"meta":{
  "domain":"en.wikipedia.org",
  "stream":"eventlogging_HomepageVisit",
  "id":"redacted",
  "dt":"2024-05-26T11:38:24.139Z",
  "request_id":"258c2bcf-a379-424b-b7d6-d845223714ab"
},
"event":{
  "is_mobile":true,
  "referer_route":"mainnamespacepagetab",
  "referer_namespace":0,
  "referer_action":"view",
  "user_id":"redacted",
  "user_editcount":4,
  "impact_module_state":"activated",
  "start_email_state":"unconfirmed",
  "homepage_pageview_token":"redacted"
},
"schema":"HomepageVisit",
"wiki":"enwiki",
"webHost":"en.wikipedia.org",
"$schema":"/analytics/legacy/homepagevisit/1.5.2",
"client_dt":"2024-05-26T11:38:24Z",
"dt":"2024-05-26T11:38:24.139Z"
}