Hello Victor,
WordPress Memory Limit: 40M
WordPress Max Limit: 256M
PHP Memory Limit: 256M
Looks like WordPress is allocated only 40MB of memory, while PHP has about 256MB of memory.
Add the following line in your wp-config.php file to increase the amount of memory allocated to WordPress to 256MB
define( 'WP_MEMORY_LIMIT', '256M' );