mysqli_stmt_execute() expects exactly 1 parameter, 0 given

[admin]

I am trying to save data from an HTML form into database

wordpress

table:

wp_testdb

using Prepared Statements method, But I am getting error against line

mysqli_stmt_execute();

<blockquote>
Warning: mysqli_stmt_execute() expects exactly 1 parameter, 0 given in
Here is my code:
</blockquote>

if(isset($_POST['BtnSubmit'])){
    include_once 'dbConnection.php';

    if($conn -> connect_error) {
        die("connection failed:".$conn-> connect_error);
    }
    
    $date           = $_POST['date'];   
    $select_bank    = $_POST['select_bank'];
    $entry_type     = $_POST['entry_type'];
    $income_cat     = $_POST['income_cat'];
    $amount         = $_POST['amount'];
        

    $sql = "INSERT INTO wp_testdb (data_one, data_two, data_three, data_four, data_five) VALUES (?, ?, ?, ?, ?);";
        
    $stmt = mysqli_stmt_init($conn);
        
    if (!mysqli_stmt_prepare($stmt,$sql)) {
            echo "SQL Error !!";
    } else {
        mysqli_stmt_bind_param($stmt, "sssss", $date, $select_bank, $entry_type, $income_cat, $amount);
        mysqli_stmt_execute();
    }
}

dbConnection.php has below data:

<?php

$dbServername = "localhost";    
$dbUsername = "root";
$dbPassword = "";
$dbName = "wordpress";
    
$conn= mysqli_connect($dbServername, $dbUsername, $dbPassword, $dbName);

Any suggestions to resolve this?