Failed to fetch http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo/dists/focal/InRelease 403 Forbidden [IP: 52.218.45.65 80]

这个问题是由于在运行"sudo apt-get update"命令时，无法获取到"http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo/dists/focal/InRelease"这个链接的资源，返回了403 Forbidden的错误。\[1\]\[2\]

根据引用\[3\]中提到的解决方法，你可以尝试编辑"/etc/apt/source.list"文件，并将"http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo/dists/focal"这个源的勾选去掉，然后选择"https://librealsense.intel.com/Debian/apt-repo"这个选项。然后再次运行"sudo apt-get update"命令，应该就能成功更新了。

请注意，这个解决方法是基于引用\[3\]中提到的情况，如果你的情况不同，可能需要采取其他的解决方法。
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