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 take a look at the error, its causes, and potential solutions.

Error

When running the following command:

npx solana-cli build --network mainnet --tag 

I encountered the following output:

{
"error": "Minting from Candy Machine 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 cannot mint tokens due to an undefined function in the contract metadata.

Understanding Metadata

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

To resolve the undefined function error, I made sure that the name and ticker fields were set correctly in my contract metadata:

// solana.cjs
const mint = await mintContract.addTransaction("My Token", {
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 Solana network');
// Configure the program account and metadata for the 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',
},
],
}
);
// Execute the Minting from Candy Machine (MCM) function
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 metadata.

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

• Test your contract using the node command line or a test environment to verify that the MCM functionality works as expected.

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