[Bug]: sessionAttributes not added to recordError event

[anthony-nhs]

Which web client version did you detect this bug with?

v1.24.0

What environment (build systems, module system, and framework) did you detect this bug with?

TypeScript v5.8.3, Webpack v5.99.9, ECMAScript modules (ESM) and React v18.3.1

Is your web application a single page application (SPA) or multi page application (MPA)?

SPA

Please provide your web client configuration

{
  allowCookies: true,
  batchLimit: 100,
  client: "arw-module",
  cookieAttributes: {
    unique: false,
    domain: "localhost",
    path: "/",
    sameSite: "Strict",
    secure: true,
  },
  disableAutoPageView: false,
  dispatchInterval: 5000,
  enableRumClient: true,
  enableXRay: true,
  endpoint: "https://dataplane.rum.eu-west-2.amazonaws.com",
  endpointUrl: {},
  eventCacheSize: 200,
  eventPluginsToLoad: [],
  pageIdFormat: "PATH",
  pagesToExclude: [],
  pagesToInclude: [
    {},
  ],
  signing: true,
  recordResourceUrl: true,
  retries: 2,
  routeChangeComplete: 100,
  routeChangeTimeout: 10000,
  sessionAttributes: {
    cptAppVersion: "PR-1019",
    cptAppCommit: "ce4821f8950c3aad054395d1e1326aaa3a3d1b20",
  },
  sessionEventLimit: 0,
  sessionLengthSeconds: 1800,
  sessionSampleRate: 1,
  telemetries: [
    "errors",
    "performance",
    "http",
  ],
  useBeacon: true,
  userIdRetentionDays: 30,
  candidatesCacheSize: 10,
  guestRoleArn: "arn:aws:iam::000000000000:role/RUM-Monitor-us-west-2-000000000000-00xx-Unauth",
  identityPoolId: "us-west-2:00000000-0000-0000-0000-000000000000",
  releaseId: "ce4821f8950c3aad054395d1e1326aaa3a3d1b20",
}

Please describe the bug/issue

According to the config I am setting custom session attributes cptAppVersion and cptAppCommit
These are added to the metadata of all events, apart from when I call recordError. The error event does get sent to AWS Rum, but it does not include the extra session attributes I have added.

I have also tried explicitly adding the session attributes before calling recordError, but they are still not added to the event

      cptAwsRum.addSessionAttributes({
        cptAppVersion: "PR-1019",
        cptAppCommit: "ce4821f8950c3aad054395d1e1326aaa3a3d1b20"
      })
      cptAwsRum.recordError(error)

[limhjgrace]

Hi @anthony-nhs, I took a quick look at our ErrorPlugin to see if we were doing anything different from the other plugins in terms of recording the event but didn't see anything noticeably different. Could you clarify when you're calling recordError? I want to verify that the client is up and running and this would help us reproduce the issue. If you could also provide the full JS error event without the attributes you're looking for as well as a different event that has the attributes you're looking for, would also help debug the process.