经过长时间的等待，manifest.json没有更新

如何解决经过长时间的等待，manifest.json没有更新

我在PWA应用程序中遇到了一些困难，即当我修改“ manifest.json”中的某些参数时，这些更改未反映在用户手机上。我还有2/3天的等待时间。有时也是（一周以上），但仍未成功。我也检查了我所有的用户手机是否都是最新的，并且都使用了Google Chrome> 80版本。我已经尝试了很多参考Google和MDN知识库的方法，但是无法弄清楚为什么“ manifest.json”参数无法在我的用户手机上自动更新。

如果用户卸载了PWA应用程序并再次重新安装，则按照“ manifest.json”的所有内容看起来都不错。基本上我已经更改（short_name，background_color，theme_color）。任何帮助深表感谢和敬意。

这是我的代码片段：

{
    "short_name": "LiveX 2020","name": "JSPL SCADA-Live X","lang": "en","description": "Product of TeamSCADA || JSPL Angul","start_url": "/?source=pwa","scope": "/","background_color": "#fbfbfb","theme_color": "#fbfbfb","dir": "ltr","display": "standalone","orientation": "portrait","prefer_related_applications": false,"icons": [
        {
            "src": "images/icons/android-icon-36x36.png","sizes": "36x36","type": "image/png"
        },{
            "src": "images/icons/android-icon-48x48.png","sizes": "48x48",{
            "src": "images/icons/android-icon-72x72.png","sizes": "72x72",{
            "src": "images/icons/android-icon-96x96.png","sizes": "96x96",{
            "src": "images/icons/android-icon-144x144.png","sizes": "144x144",{
            "src": "images/icons/android-icon-192x192.png","sizes": "192x192",{
            "src": "images/icons/android-icon-512x512.png","sizes": "512x512","type": "image/png"
        }
    ]
}

在我的index.php中

<link rel="manifest" href="/manifest.json">