Hello I can reproduce the problem with some other packages (I tried several from the list https://packages.debian.org/unstable/main/newpkg and got the error in the links to buster and sid).
I also tried https://packages.debian.org/stretch-backports/kernel-image-4.14.0-0.bpo.2-arm64-di with the same results (error 500). Thanks to some help in the IRC channel we've found that only one of our wo machines serving packages.debian.org fails: https://packages-pkgmirror-csail.debian.org/sid/elpa-find-file-in-project gives the 500 Internal Server Error but https://packages-picconi.debian.org/sid/elpa-find-file-in-project works. If I can be of any help to solve this, just tell. I'll try to look at the logs later, but I'm not sure I have the corresponding permissions (will try). Thanks -- Laura Arjona Reina https://wiki.debian.org/LauraArjona
