问题: 发送交易异常：tx verify failed, verify tx authentation failed, authentication error: authentication failed, [refine endorsements failed, all endorsers have failed verification]
回答: 交易发送者用户身份错误，具体表现为签名证书配置错误，sdk_config.yml中的user_sign_key_file_path和user_sign_crt_file_path配置，需和链用户保持一致