How to get the proof(bytes 32) data from a contract

Hello, I have a contract here

I am trying to write this contract in order to mint a NFT. But its asking me a proof (bytes 32). any idea how to obtain it from the contract ? I have the merkle root but still couldnt figure it out, how can I obtain proof?

Thanks a lot!

Hi, as it is written it doesnt give the necessary details to offer a good help, can you check the following link and include additional information like, a code snipped of what you have so far, where is it asking you for a proof (bytes 32), etc?