Node.js 重定向响应位置

我想将响应重定向到CURL链接，但收到错误消息

“发送到客户端后无法设置标头”

我使用环回响应

import { Response as loopResponse } from '@loopback/rest';

这是我的密码

 @inject(RestBindings.Http.RESPONSE) private loopResponse: loopResponse,
async dashboardGenerate(
    @param.query.string('workgroupId') workgroupId: string,
    @param.query.string('period') period: string,
    @param.query.string('historyDepth') historyDepth: number,
    @param.query.string('reportDate') reportDate: string,
  )  {
    const resp = await report.dashboardExport(
            reportDate,
          );
          const respBody = resp.body;
          this.logger.info('response: ', respBody);
          const params = {
            Bucket: fileBucket,
            Key: respBody.data.path.slice(1, -1),
            Expires: 400,
          };
          const curl = s3.getSignedUrl(Constants.SIGNED_URL_OPERATIONS.get, params);
          this.logger.info('curl: ', curl);
          return this.loopResponse.redirect(curl);
}