Hola Lucas como estas?
Parece que tiene un problema el certificado, intente haciendo un curl
curl https://siu-lab.psi.unc.edu.ar
curl: (60) SSL certificate problem: unable to get local issuer certificate
More details here: https://curl.haxx.se/docs/sslcerts.html
curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.