Error downloading FreeBSD U-Boot image

[NeoFax75]

I get an error when trying to access this website: https://pkg.freebsd.org/FreeBSD:13:aarch64/latest/All/. It throws a Error 403 nginx forbidden error. Then here is what is shown in the terminal:

tar -xf u-boot-rpi-arm64-2020.10.txz
tar: This does not look like a tar archive
xz: (stdin): File format not recognized
tar: Child returned status 1
tar: Error is not recoverable: exiting now