Problem with reusing csv file upload to mysql table, using PHP [closed]

I have written a code upload multiple CSV files using PHP; which has been working quite well. However, I just discovered that this code would not work for a particular CSV file. This file has some null values as data, which we intend to update later on. I have debugged multiple times, but no luck. I could read the contents (headers and data) of the CSV file, but they are not being written into the database.

The error I’m seeing is: Invalid parameter number: number of bound variables does not match number of tokens in

Here is a snippet of the my code:

for ($i = 0;$i < $file_count;$i++){

    $file_name = $_FILES["file-$i"]['name'];
    $file_type = $_FILES["file-$i"]['type'];
    $file_tmp_name = $_FILES["file-$i"]['tmp_name'];
    $file_error = $_FILES["file-$i"]['error'];
    $file_size = $_FILES["file-$i"]['size'];

    $handle = fopen($_FILES["file-$i"]['tmp_name'], "r");
    $headers = fgetcsv($handle, 1000, ",");
    //print_r($headers) . "<br>";
    $table_name = create_table($file_name, $headers);
    $csv_data = [];

    while (($data = fgetcsv($handle, 1000, ",")) !== false){

        //print_r($data) . "<br>";
        array_push($csv_data, $data);
        
    }
    //print_r($csv_data);
    fclose($handle);

    //echo "===================================================================================================================================" . "<br>";

    //insert records to table
    echo insert_records($table_name, $headers, $csv_data);

}




function create_table($file_name, $csv_headers){