THIS PROBLEM HAS RETURNED! 

CURL ERROR: SSL certificate problem: unable to get local issuer certificate

Yesterday, working in the sandbox was fine (I've been working fine all week long), then this morning I started testing again, and first thing I get is this message!

I've done a quick search and found a couple of articles referencing this back in 2015, but it was supposedly solved.

Is anybody else having this problem? How did you fix it?  BTW, I have not changed anything on my system since yesterday when it was working fine.

Regards,

Dan Luevano