Getting the error while installing Jitsi with own certificate -
Config written to /var/lib/prosody/<auth.xxx.cnf>
problems making Certificate Request
139674834752832:error:0D07A097:asn1 encoding routines:ASN1_mbstring_ncopy:string too long:…/crypto/asn1/a_mbstr.c:107:maxsize=64
What is the number of characters used for that domain?
Total 54 characters for domain and 62 characters for FQDN.
Seems one of the fields in the cert becomes too long. You should use a shorter fqdn.
<auth.xxx> 67 characters and maxsize=64 is mentioned in the error.
/var/lib/prosody/<xxx.crt> is generating without any such error because 62 characters within limit so.
One option is to use a shorter domain, or you can go over the components and reconfigure to use shorter subdomains like a.xxx. But you need to recreate the users and everything by hand.
The default installer does not support domains longer than 60 characters.