so I can do a page inspection in firefox and Ive found the color setting that I can turn off to make the letters black and easy to read. now my question is how do I make that stay that way? how do I edit my layout?

This is the error from my log

2024-03-07 22:01:00 - Unknown Error: AbanteCart core v.1.3.3 Class "net\authorize\api\contract\v1\MerchantAuthenticationType" not found in <b>/home/loveyou7petsuper/public_html/extensions/default_authorizenet/storefront/model/extension/default_authorizenet.php</b> on line <b>36</b>

Authorize.net doesn't show any errors on their end so I know its something I need to do. My question is, what do I need to do?

As stated I lost my fast checkout page on my website after configuring my authorize.net extension. I wasn't able to take a payment so i was on the phone with tech support and after failing to find any error on their end I went back to the storefront page of my website to try the checkout again and the fast checkout page wouldn't show.

Things Ive tried:
Clearing the cache
Restarting my computer
a different browser
making sure everything is as it was to the best of my knowledge

I figured out how to turn error logs on and this is the error I'm getting

Unknown Error: AbanteCart core v.1.3.3 Unsupported operand types: string + float in <b>/home/loveyou7petsuper/public_html/core/lib/tax.php</b> on line <b>228</b>