Connection to JAMS server impossible

Hello all,

I open a new topic about my problem.
My goal is to deploy a JAMS server on my local network. During the installation, I haven’t see any error. I created myself a key and a certificate through openssl.
Once JAMS and Jami installed, I tried to login on Jami and I have an error “Error while creating your account. Check your credentials”
On the JAMS side this eror appears “] WARN net.jami.jams.server.update.UpdateCheckTask - Could not establish connection to JAMS Update Center with error: PKIX path building failed: unable to find valid certification path to requested target”

Probably an error with my certificate ?
Please, Can someone help me ?

Thanks in advance