vue.js WebSocket connection to ‘ws://localhost:3000/‘ failed: WebSocket is closed due to suspension.

报错

客户端 Safari 版本 13.0.1 (14608.2.11.1.11)
场景重现 点击切换页面，vue.js 就报错这个提示。但放到线上去又不会有。

WebSocket connection to 'ws://localhost:3000/' failed: WebSocket is closed due to suspension.

问题原因

搜索了一下，说是因为非https导致。