The request is not allowed by the user agent or the platform in the current context, possibly because the user denied permission，在当前上下文中，用户代理或平台不允许该请求，可能是因为用户拒绝了权限。具体原因是iphone手机不允许直接video标签自动播放autoplay。
- the user permission platform possiblythe user permission platform permissions the consider winerror conflicting permissions behaviour the possibly possible blocking non-blocking starvation possibly possible digits all possible unmerged merging because leetcode possible binary trees maxlifetime possibly consider shorter