PHP - Warning: mysqli_error() expects exactly 1 parameter, 0 given in...

<?php

if(isset($_POST['deitmsg'])){

    $vekm = mysqli_query($conexion, "SELECT ID FROM mensaje WHERE para = '".$_SESSION['usuario']."'")or die(mysqli_error());

    $fkrn = mysqli_fetch_assoc($vekm);

    $ndnn = $fkrn['ID'];

    $gkfre = mysqli_query($conexion, "DELETE * FROM mensaje WHERE ID = '".$ndnn."'")or die(mysqli_error());

}

?>

Warning: mysqli_error() expects exactly 1 parameter, 0 given in C:\myxampp\htdocs\dd\index.php online 351

$gkfre = mysqli_query($conexion, "DELETE * FROM mensaje WHERE ID = '".$ndnn."'")or die(mysqli_error());

$vekm = mysqli_query($conexion, "SELECT ID FROM mensaje WHERE para = '".$_SESSION['usuario']."'")or die(mysqli_error($falta-el-parametro-de-conexion));

$vekm = mysqli_query($conexion, "SELECT ID FROM mensaje WHERE para = '".$_SESSION['usuario']."'")or die(mysqli_error($conexion));