We had the same issue a few days ago with not our training database, but our main Epicor. Tried Chrome and Edge. Seems they are both getting more stringent with certificates.
I have seen others post they have the same error with scanners trying to connect.
Presume they use self-signed certificate as we were?
Only a hunch, but that is the exact error we were getting. ERR_SSL_KEY_USAGE_INCOMPATIBLE.
Here is the other link for another post.