Allowed memory size

Hello Team,

I have issue with my website error message ” Allowed memory size ” i change my memory size from 64M TO 256M in PHP.ini
also in default-constants.php and wp-config.php change to 256M

still im getting this issue i cant login my WP admin

default-constants.php setting

function wp_initial_constants() {
global $blog_id;

// set memory limits
if ( !defined(‘WP_MEMORY_LIMIT’) ) {
if( is_multisite() ) {
define(‘WP_MEMORY_LIMIT’, ‘256M’);
} else {
define(‘WP_MEMORY_LIMIT’, ‘256M’);
}
}

if ( ! defined( ‘WP_MAX_MEMORY_LIMIT’ ) ) {
define( ‘WP_MAX_MEMORY_LIMIT’, ‘256M’ );

wp-config.php setting

define( ‘WP_MAX_MEMORY_LIMIT’, ‘256MB’ );

this is the error message when i login to WP admin panel im getting

Fatal error: Allowed memory size of 262144 bytes exhausted (tried to allocate 229161 bytes) in /***/***/***/wp-content/themes/***/***/classes/class.options_machine.php on line 182

please Help

Thanks