UPDATE: I figured it out. For anyone else like me, you can access the /etc/ssl/cert.pem
file in the Finder by using the Go > Go To Folder menu option and then typing /private/etc/ss/
. This will open the correct folder and you’ll see the cert.pem
file.
Then download the cacert.pem
file from here. When the file downloads onto Mac OS, it will be named cacert.cer
. Rename it to cert.pem
and then drag it to the folder you opened above and allow it to replace the previous file of the same name.
I then stopped my Local site. Restarted Local, and restarted the site. When I tried activating pro Smart Slider it worked!
Thanks @kfrank and @ben.turner for your help. Much appreciated!