Google Sheets | Google appscript parse CSV into multiple Google Sheet Files

I have a CSV file that is provided to me which is over 100mb. I want to convert this into a google sheet but i know the limitations of Google Sheets are as follows:

• Maximum Cells: 5 million cells per sheet, meaning a sheet can have a maximum of 5 million rows and 1 column, 1 million rows and 5 columns, and so on.
• Maximum Sheets: 200 sheets per spreadsheet.
• Maximum File Size: 50MB for a single sheet.

So what i want to do is import this csv as a blob and then break it out into 10mb segments and create new google sheets for each piece.

I have this code so far:

function splitFileIntoChunks(fileId) {
  try {
    // Get the file by ID
    var file = DriveApp.getFileById(fileId);

    // Define the maximum chunk size in bytes (10MB)
    var chunkSizeBytes = 10 * 1024 * 1024;

    // Get the file's size
    var fileSizeBytes = file.getSize();

    // Create a folder to store the chunks
    var folder = DriveApp.createFolder("FileChunks_" + file.getName());

    // Calculate the number of chunks needed
    var numChunks = Math.ceil(fileSizeBytes / chunkSizeBytes);

    // Read and split the file into chunks
    var blob = file.getBlob(); // Get the Blob object once
    var bytePosition = 0; // Initialize the reading position
    for (var i = 0; i < numChunks; i++) {
      var chunkSize = Math.min(chunkSizeBytes, fileSizeBytes - bytePosition); // Adjust for last chunk

      var chunkData = blob.getBytes(chunkSize);
      var chunkBlob = Utilities.newBlob(chunkData);

      // Create a new file for the chunk in the folder
      var chunkFileName = file.getName() + "_chunk_" + (i + 1) + ".part";
      var chunkFile = folder.createFile(chunkBlob.setName(chunkFileName));

      bytePosition += chunkSize; // Update position for the next chunk
    }

    // Optionally, return a status or message
    return "File split into chunks successfully";

  } catch (e) {
    // Handle any errors here
    console.log("Error: " + e.toString());
    return "Error: " + e.toString();
  }
}

when it gets to this line:

var chunkData = blob.getBytes(chunkSize);

I get an error:

Error: Exception: The parameters (number) don’t match the method
signature for Blob.getBytes.

Any ideas what I maybe doing wrong here?