我正在尝试验证用户，但由于跨源读取阻塞（CORB）被阻止问题，我无法调用API。ts代码为

if (this.plugins.isOnline()) {
            if (this.wait == true) {
                return;
            } else if (this.userLogin.email == '' || this.userLogin.password == '') {
                this.utility.doToast("Please don't leave any field blank.");
                return;
            } else {
                this.wait = true;
                this.auth.login(this.userLogin).subscribe((success) => {
                    this.wait = false;
                    console.log(success.successData);
                    this.credential.setUser(success.successData);
                    this.plugins.sendTags(success.successData.id)
                    this.rememberUsertype(success.successData.is_celebrity);
                    if(success.successData.is_celebrity == '0'){
                    this.app.getRootNav().setRoot("HomePage");
                    }
                    else if(success.successData.is_celebrity == '1'){
                    this.app.getRootNav().setRoot("DashboardPage");
                     }

                    }, (error) => {
                        console.log(error);
                    this.wait = false;
                    if (this.utility.timeOutResponse(error))
                        this.utility.doToast("The email or password you entered is incorrect.")
                })
            }
        } else {
            this.utility.doToast(this.utility.internetConnectionMessage());
        }

此.auth.登录函数

login(params) {
        console.log(params);
        var url = this.constants.API_ENDPOINT + 'login';
        var response = this.http.post(url, params, {}).map(res => res.json());
        return response;
    }