Function prepareHeaders

client/src/utils/ajax.ts:508–511

(headers)

    fetchBaseQuery({
      baseUrl: apiLocation,
      prepareHeaders(headers) {
        headers.set('CSRF-Token', getCSRFToken());
        return headers;
      },
      credentials: 'include'
    }),
    // Retry in the case this is the initial request - csrf is not set yet, and initial returns 403