Mezzanine + Cartridge 'Cart' instance needs to have a primary key value

Question

Good afternoon. I just installed the cartridge to see its capabilities and got an error. Please help me solve this.

https://pastebin.com/tNuMbbQm

[1]: https://pastebin.com/tNuMbbQm

Answer 1

Made changes to the code as in the picture and it worked! I'm happy!