cURL error 60: SSL problem

cURL error 60: SSL certificate problem: certificate has expired. I am trying to import an XML file using wp all import and getting that error

Your server certificate has expired. You must renew that. In this context it would also seem as if you had a less secure encryption mode set on Cloudflare (change that to “Full strict” after you renewed your certificate).

@sandro Thank you for your reply. My SSL is up to date so I will try activating it to strict and see what happens