如何解决跨域 ejs 安装

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Accept: text/html, */*; q=0.01
DNT: 1
Origin: null
User-Agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36

Failed to load https://ebt.oss-cn-beijing.aliyuncs.com/PDF_SC/3b6ab81c-2054-43bb-b20a-3570a77569a4.pdf: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘null’ is therefore not allowed access.