in src/trace/interceptors/fetch.ts [105:111]
uniqueId: uuid(),
service: customConfig.service,
serviceVersion: customConfig.serviceVersion,
pagePath: customConfig.pagePath,
category: ErrorsCategory.AJAX_ERROR,
grade: GradeTypeEnum.ERROR,
errorUrl: (response && response.url) || `${url.protocol}//${url.host}${url.pathname}`,