Server Error with OpenID Connect register endpoint
When trying to register an OIDC RP with the register endpoint, we have:
[Tue Oct 01 12:26:44.380051 2019] [fcgid:warn] [pid 27403] [client 83.118.197.36:10400] mod_fcgid: stderr: Undefined subroutine &Lemonldap::NG::Portal::Issuer::OpenIDConnect::random_string called at /usr/share/perl5/Lemonldap/NG/Portal/Issuer/OpenIDConnect.pm line 1340.