问trtc本地是用的demo里面的签名工具js来userSig，部署到正式的域名服务器签名不？

腾讯的trtc本地是用的demo里面的签名工具js来userSig，部署到正式的域名服务器签名不行，必须得后台生成签名吗

RtcError: Failed to join room - verify sig failed! <JOIN_ROOM_FAILED 0x4004> https://trtc-1252463788.file.myqcloud.com/web/docs/module-ErrorCode.html

at s.<anonymous> (http://enokeji.cn/student/static/js/chunk-libs.69e2ec6e.js:55:493223)

at s.emit (http://enokeji.cn/student/static/js/chunk-libs.69e2ec6e.js:55:349897)

at e.value (http://enokeji.cn/student/static/js/chunk-libs.69e2ec6e.js:55:367749)