Hi, I think that issue can be closed.
I found, that some old packages from http://pkg.switch.ch/switchaai/debian repository has been installed. Namely:
- opensaml-schemas:amd64 (3.0.1-1switchaai1~stretch1) - libxml-security-c20:amd64 (2.0.2-3switchaai1~stretch1) - xmltooling-schemas:amd64 (3.0.4-1switchaai1~stretch1)I used to use the repo with Debian 8 and 9. When I uninstalled them and reinstalled shibboleth-sp-utils with dependecies from official Buster repo, everything works.
