Patch READMEs all return 500
After a minor-version upgrade automatically applied to our AWS RDS instances in production broke our legacy software, I am trying to retrieve information on what changes were included in this upgrade. I have a list of patches to investigate, and links to them in MOS, all of which have README links. But all of the README links fail. The response just says "an unexpected error has occurred".
I assume there is some content, at least for some patches, that I should be able to see. In fact one of the ones I tried said to be sure to read the README before downloading the patch, but that README doesn't work either.