As of version 10.3, PKI is still relying heavily on Velocity library as the template engine for legacy servlets including CA & KRA UI. Generally newer web applications are written with JavaScript framework and REST API (e.g. TPS UI).

The Velocity project itself has not been updated since 2010:
http://velocity.apache.org/news.html

Also there seems to be no Velocity package on F25:
http://koji.fedoraproject.org/koji/packageinfo?packageID=529

PKI on F25 can still work with Velocity package from F24, but it's not clear how much longer it will continue to work. Some investigation should be done to see if it's possible to remove the dependency on Velocity without major change.

See also ticket #529.

Dogtag PKI is moving from Pagure issues to GitHub issues. This means that existing or new
issues will be reported and tracked through Dogtag PKI's GitHub Issue tracker.

This issue has been cloned to GitHub and is available here:
https://github.com/dogtagpki/pki/issues/705

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Thank you for understanding, and we apologize for any inconvenience.