Yesterday, I got this error in my local environment, with Laravel Valet:
your connection is not private
When I clicked on the “Advanced” button, I got this information: the certificate was expired.
To solve this problem, you need to unsecure the local domain (glotpress.test in my local environment):
valet unsecure glotpress.test
Then you need to remove the certificates for this local site:
rm ~/.config/valet/Certificates/glotpress.test.*
And, finally, secure the local domain another time:
valet secure glotpress.test
Now the certificate is valid.
Note: sometimes, the last command valet secure glotpress.test doesn’t work. A workaround that worked for me is to access to the folder of the site and then execute the command to secure the site:
cd /Users/myuser/code/wordpress/glotpress valet secure