Highend Incompatibilities with WordPress 5.3

Hello,

I have updated to WordPress 5.3 and my theme is showing multiple incompatibility strings that isn’t allowing my site to load. I can’t access my site via the login.

My site is:

thewordsmithblog.com

Please help! I’m doing all I can to troubleshoot. I already contacted Wordfence with security, and they said this was not a security issue.

I appreciate your help and look forward to hearing from you soon!

Thank you,
Erin