Solana: Undefined function error, though exporting and importing properly

Solana Smart Contracts: Undefined Function Error in Minting Process

As a developer working with Solana, you have probably encountered various errors while testing and deploying your smart contracts. Recently, I encountered an undefined function error during the minting process of my Solana contract using the node command-line interface (CLI). In this article, we will explore the error, its causes, and potential solutions.

The Error

When running the following command:

npx solana-cli build -- network mainnet -- tag < your - tag - name >

I encountered the following output:

{

  "error": "Candy Machine call failed"

  "details":

    "Cannot mint tokens without a name or ticker. Please set a valid name and ticker before minting."

  ]

} }

This error message indicates that Solana is unable to mint tokens due to an undefined function in the contract’s metadata.

Understanding the Metadata

In Solana, metadata is used to provide additional information about a smart contract, such as its name, ticker symbol, and other details. The name and ticker fields are used to identify the contract and enable Minting from Candy Machine (MCM) functionality.

To resolve the undefined function error, I ensured that both the name and ticker fields were correctly set in my contract’s metadata:

// solana.cjs

const mint = await mintContract.addTransaction("MyToken", {

  name: "My Token"

  ticker: "MTK"

});

// server.js

require('dotenv').config();

const web3 = require('@solana/web3');

const { SolanaProgram } = require('@solana/spl');


(async() => {

  // Initialize the wallet and connect to the Solana network

  const connection = new web3 .WebsocketConnection({

    endpoint: 'wss://api.solana.com',

  });

  console.log('Connected to Dispute network');


  // Set up the program account and metadata for Minting from Candy Machine (MCM) functionality

  const mintContract = await web3.loadProgram(

    'path/to/your/mintContract',

    {

      accounts: [

        {

          programId: 'your-program-id',

        },

        {

          programId: 'your-mint-account-addr',

          account: connection,

        },

      ],

      metadata: [

        {

          name: 'My Token',

          ticker: 'MTK',

        },

      ],

    } }

  );


  // Perform Minting from Candy Machine (MCM) functionality

  const mint = await mintContract.addTransaction({

    name: 'My Token',

    ticker: 'MTK',

  });

})();

Additional Recommendations

To ensure that your Solana smart contracts are properly configured, follow these additional recommendations:

• Verify that the name and ticker fields are set correctly in your contract’s metadata.

• Use a program ID and account address for Minting from Candy Machine (MCM) functionality.

• Test your contract using the node CLI or a testing framework to verify that the MCM functionality is working as expected.

By following these steps, you should be able to successfully resolve the undefined function error and successfully mint tokens using Solana’s Minting from Candy Machine (MCM) functionality.