@goody317 Thank you for your help
@nm1com
Thank you for your advice.
The Plugin Litespeed cache caused this error. When i turn off this plugin, the menu button is working as normally. But i do not know how to fix it.
Could you help me?
Thank you so much!
Thank you for your help @makewebbetter and @dynamiczach.
More question:
1. About the PHP error: What should i do to remove that notice? You know i am not a coder.
2. Button Frozen: With some products i use a plugin which redirecting to amazon but some products i add manualy by woocommerce plugin still not proceed by paypal or 2checkout. The button is frozen. You can see the link below:
Link Product 1
The button is frozen
Thank you so much!