Thanks !
Apparently it's version 9 pki-servlet-4.0-api.noarch 1:9.0.30-3.module+el8.5.0+697+f586bb30 @appstream pki-servlet-engine.noarch 1:9.0.30-3.module+el8.5.0+697+f586bb30 @appstream
I found the directory /usr/share/doc/pki-servlet-engine but there's nothing indicating the version
I tried renaming "secret" attribute to "requiredSecret" and restarting ipa, didn't work. Then I also renamed "secret" to "requiredSecret" in /etc/httpd/conf.d/ipa-pki-proxy.conf just in case, didn't work. I have undone the changes.
Where would I be looking next? Thanks for your help.