PHP 8 Critical Error

Hi,
When I update from PHP 7.4 to PHP 8.0 I’m getting a site error:

TypeError thrown
count(): Argument #1 ($value) must be of type Countable|array, null given

I’ve made sure the theme and all plugins are updated. I believe it’s the theme causing the issue and not wordpress because wordpress error logs are showing nothing.

Will you advise?

I have reverted the site to PHP 7.4 for the time being, but GoDaddy is forcing a PHP 8.0 update soon.

Please advise.

URL: https://racetechracecars.com/