ADD to bag is not working when going to check out

[Allinonepremier]

Hello when I go to checkout or add to bag i get  this error Parameter Missing or Invalid: Required parameter missing or invalid: items  how do i fix i tried so many differnet solutions none have worked please help?

[Zqdo]

Glad to help. Could you send the link to your website?

[ZenoPageBuilder]

Hello @Allinonepremier 

It seems your theme code contains bugs. If it is a custom theme, contact the developer for a fix.