Erreur de \cmdKV@YAD@url undefined

[dbitouze]

L'ECM suivant :

\documentclass{yathesis}
\usepackage{mwe}
\usepackage{kpfonts}
\begin{document}
\institute[logo=example-image,url=https://institut.org]{Institut}
\coinstitute{Co-institut}
\maketitle
\end{document}

provoque l'erreur :

! Undefined control sequence.
\cmdKV@YAD@url