wxlog:Error:set token fail, errCode:4, errLog:wx token[] or contextId[(null)] is nil!

微信登录的时候产生了错误。

使用SendAuthReq()后报了以上错误:

@objc func wxLogin() {

           let req = SendAuthReq()

           req.openID = "wxxxxxxxxxxxxxxxxc"

           req.scope = "snsapi_userinfo"

           req.state = "12345"

           WXApi.send(req)

}

使用checkUniversalLinkReady:

WXApi.checkUniversalLinkReady { (step, result) in
     print("step:", step)
     print("result:", result.success, result.errorInfo, result.suggestion)
}

控制台打印:

step: WXULCheckStep
result: true Universal Link check passed. The application is launched by WeChat via Universal Link 
step: WXULCheckStep
result: true All Check Passed! 

微信登录的错误在手机上表现为： 点击App上的登录后，跳转到微信，出现“正在登录中”的提示，后立即返回App。然后报错：set token fail, errCode:4