Mikrotik SSL: internal error (6) Exactly since this day.

Hello.

As of today, DOH DNS on my Mikrotik 6.49.5 has stopped working.
DNS does not work at all, but only writes timeout or ssl error.

Exactly since this day. Reinstalling the certificate did not help.
What can be the reason for this sudden crash?

NextDNS is on a paid basis.