Solana: Uncaught runtime errors: ERROR String contains an invalid character base64ToUint8Array

I’d be happy to help you troubleshoot the issue with Solana’s runtime errors. However, please note that since this is a GitHub repository, I’ll provide some guidance on how to approach the problem.

Error Message Analysis

The error message ERROR String contains an invalid character indicates that there’s an issue with a string literal in your codebase. Specifically, it seems like you’re trying to create a base64 encoded array using the base64ToUint8Array() function from Solana.

In this case, the problem lies in the fact that the base64ToUint8Array() function expects a valid base64-encoded byte string as input. However, your code is attempting to pass it an invalid character string.

Possible Cause

The possible cause of this error could be due to one or more of the following reasons:

• Invalid Base64 Encoding: Ensure that you’re correctly encoding and decoding strings using base64. You can use online base64 validators to check if your inputs are valid.

• Malformed String Input: Verify that your input string is properly formatted, with no leading or trailing whitespace, and no special characters other than those allowed in a base64-encoded byte array (e.g., +/--=).

• Invalid Character Encoding

  : In Solana’s runtime, the character set used for encoding and decoding must be the same as the one used for input/output operations. Make sure that your code is correctly setting the character encoding.

Troubleshooting Steps

To resolve this issue, try the following:

• Check Base64 Encoding: Use online base64 validators to verify if your input string is correctly encoded.

• Validate Input String

  

  : Ensure that your input string has no leading or trailing whitespace and only contains allowed characters (e.g., letters, numbers, special characters).

• Verify Character Encoding: Confirm that the character encoding used for input/output operations matches Solana’s runtime.

• Test with a Sample String: Try creating a sample base64-encoded byte array using base64ToUint8Array() and pass it to your code to see if the issue persists.

GitHub Repository

Here’s an example of how you can modify your frontend and backend code to fix this error:

// In frontend.js

const base64 = require('base64-js');


function createBase64ByteString(input) {

  const encoded = base64.stringify(input);

  return encoded;

}


// In backend.js

async function main() {

  try {

    // Create a sample input string using a valid character set (e.g., "hello")

    const inputString = 'hello';

    

    // Use the createBase64ByteString function to encode the input string as a base64-encoded byte array

    const base64EncodedArray = createBase64ByteString(inputString);

    console.log(base64EncodedArray);

  } catch (error) {

    console.error(error);

  }

}

By following these troubleshooting steps and using online tools for validation, you should be able to resolve the issue with Solana’s runtime errors. If the problem persists after attempting these fixes, please provide more details about your codebase and error messages for further assistance.

Note: Since this is a GitHub repository, make sure to commit any changes made to fix the issue and push the updated codebase to your repository.