<wx-open-subscribe :template="options.extend.templateIds"
                   :id="'subscribe-btn' + options.randomId">
     <script type="text/wxtag-template">
            <style>
                #btn {
                    zIndex: 1000 !important;
                    width: 100px;
                    height: 100px;
                    color: red;
                    fontSize: 34px;
                    position: relative;
                    background-color: #333;
                    top: -20px;
                    left: -10px;
                 }
            </style>
            <div id="btn" style="z-index: 1000; display: inline-block">测试</div>
     </script> 
</wx-open-subscribe>

let btn = document.getElementById('subscribe-btn' + this.options.randomId);
btn.addEventListener('success', function (e) {
    
});
btn.addEventListener('error',function (e) {

});

之前是好的，代码和微信公众号配置都没有改过，但从上周开始一直报这个错误