Notification Bundle containing an error state

{
  "resourceType" : "Bundle",
  "id" : "e2c9dc20-615e-4603-9005-74deb209cbb0",
  "type" : "subscription-notification",
  "timestamp" : "2020-04-17T10:24:13.1882432-05:00",
  "entry" : [{
    "fullUrl" : "urn:uuid:b21e4fae-ce73-45cb-8e37-1e203362b2ae",
    "resource" : {
      "resourceType" : "SubscriptionStatus",
      "id" : "b21e4fae-ce73-45cb-8e37-1e203362b2ae",
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: SubscriptionStatus b21e4fae-ce73-45cb-8e37-1e203362b2ae</b></p><a name=\"b21e4fae-ce73-45cb-8e37-1e203362b2ae\"> </a><a name=\"hcb21e4fae-ce73-45cb-8e37-1e203362b2ae\"> </a><a name=\"b21e4fae-ce73-45cb-8e37-1e203362b2ae-en-US\"> </a><p><b>status</b>: error</p><p><b>type</b>: event-notification</p><p><b>eventsSinceSubscriptionStart</b>: 328</p><h3>NotificationEvents</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>EventNumber</b></td><td><b>Timestamp</b></td></tr><tr><td style=\"display: none\">*</td><td>328</td><td>2020-04-17T10:20:00-05:00</td></tr></table><p><b>subscription</b>: <a href=\"broken-link.html\">??</a></p><p><b>topic</b>: <a href=\"broken-link.html\">http://example.org/FHIR/R5/SubscriptionTopic/admission</a></p><p><b>error</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/subscription-error no-response}\">No response</span></p></div>"
      },
      "status" : "error",
      "type" : "event-notification",
      "eventsSinceSubscriptionStart" : "328",
      "notificationEvent" : [{
        "eventNumber" : "328",
        "timestamp" : "2020-04-17T10:20:00.0000000-05:00"
      }],
      "subscription" : {
        "reference" : "http://example.org/FHIR/R5/Subscription/123"
      },
      "topic" : "http://example.org/FHIR/R5/SubscriptionTopic/admission",
      "error" : [{
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/subscription-error",
          "code" : "no-response"
        }]
      }]
    }
  }]
}