Uncaught (in promise) DOMException: Failed to execute 'postMessage' on 'Window': An object could not be cloned.
你应该在你的postMessage中传入了不可clone的参数。比如一些HTML element。因为这些元素即使传过去了（cloned），也无法操作啊！ ...
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. ...
2019-12-20 15:40 0 1450 推荐指数：
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