我正在Component为我的瑜伽App建立一个自定义活动日历codesandbox。实际上我打算在我的 . 上做IDE，但想法开始很快就开始了，我最终使用了它。
我试图从使用中获取widthand然后尝试访问暗淡，就像这个解决方案一样。height<div/>ref={(el) => this.props.testing((this.container = el))componentDidMount()
突然我开始收到以下错误codesandbox：
TypeError
Failed to fetch
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在控制台上：
Failed to load resource: net::ERR_CERT_COMMON_NAME_INVALID
(index):1 Uncaught (in promise) TypeError: Failed to fetch
(index):1 Access to fetch at 'https://codesandbox.io/api/v1/sandboxes/wm1dl/cache' from origin
'https://wm1dl.codesandbox.io' has been blocked by CORS policy: Response to preflight request
doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the
requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors'
to fetch the resource with CORS disabled.
codesandbox.io/api/v1/sandboxes/wm1dl/cache:1 Failed to load resource: net::ERR_FAILED
我尝试检查我的网络和其他东西，但我不知道如何标准化。
我需要对此进行规范化，或者至少能够确保我可以安全地将我的文件复制/提交到 github，然后在我的 IDE 上使用它。
这是我的沙盒
