Veyon-4.9.5-1 on ubuntu-24.04.2 crash

[ogombert]

Hi everyone,
I've a fresh install of Veyon-4.9.5-1 on ubuntu-24.04.2, all dependencies satisfied.
when I start veyon-configurator : app crash
for veyon-cli : [CRIT] CryptoCore: RSA not supported! Please install a QCA plugin which provides RSA support (e.g. packages such as libqca-qt5-2-plugins or qca-qt5-ossl).
but libqca-qt5-2-plugins is already installed and
apt-cache search qca-qt5-ossl : no answer

any idaes ?
thanks for your help,
Olivier