Error messages when updated to PHP Version 7.4

Hi, I installed the WoodMart theme and it was fine. I got the messages form Woo-Commerce that I need to update the PHP version of MySQL from 7.1 to at least 7.4!
Since then I get lots of error messages while I work with your theme and WordPress.

1. I can’t add more products
2. I get the error message that SKU is invalid or duplicated
3. Wp-admin is too slow
4. Website get critical errors

Which version of PHP is optimised for your configurations?

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Hello,

Could you please check how it works with some default WordPress themes like TwentyTwenty or WooCommerce Storefront to understand is it our theme issue or not?

Regards

[Author]

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