Uncaught (in promise) DOMException: Failed to execute 'postMessage' on 'Window': An object could not be cloned.
你應該在你的postMessage中傳入了不可clone的參數。比如一些HTML element。因為這些元素即使傳過去了（cloned），也無法操作啊！ ...
原文：patchUpload.vue?5e29:406 Uncaught (in promise) DOMException: Failed to execute 'readAsArrayBuffer' on 'FileReader': The object is already busy reading Blobs.
patchUpload.vue e : Uncaught in promise DOMException: Failed to execute readAsArrayBuffer on FileReader : The object is already busy reading Blobs. ...
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首先：你能看到這個文章說明你很幸運！！！，因為我也是翻了好久才找到問題，所以寫個博客記錄下 出現這個報錯的原因很簡單：那就是你的 url 寫錯了！！ 前面好多人說加上 http:// ...
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