I'm trying to add a LetsEncrypt certificate to my hub (C7 running 2.4.0.151) but every time I attempt to save the certificate, I get a blank page with a 500 response. I've tried just the cert and key, I've tried cert+chain and key, it just seems like whatever I put in barfs a 500. The rest of the hub works fine still, so this isn't the issue some others have encountered after adding a certificate.
I see @jlvillal posted something about this and then deleted it—did you perhaps find out what the problem was?