"Gas Estimation Failed" on mint function ERC-721 contract

[Skyge]

Emmm, I think this can be an API, such as https://my-json-server.typicode.com/abcoathup/samplenft/tokens/, and maybe you can have a look in this tutorial, it explains about the MetaData

Create an NFT and deploy to a public testnet, using Truffle

In this tutorial we will create a non-fungible token (NFT) and deploy to a public testnet. ERC721 is a standard for representing ownership of non-fungible tokens, that is, where each token is unique such as in real estate or collectibles. We will use Presets contracts in OpenZeppelin Contracts 3 to create an ERC721 and deploy using Truffle. Setting up the Environment We begin by creating a new project. $ mkdir mynft && cd mynft $ npm init -y Then we install OpenZeppelin Contracts which has …