PHP memory outages?

Question

PHP

There are two almost identical sites, on one of them when opening a subcategory in the server logs

PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 23768 bytes) in /var/www/admin/data/www/msk.remi-m.ru/system/library/image.php on line 34

although on another site the page opens without problems, the products are absolutely identical. What could be the problem? Thanks in advance

Answer 1

Different memory_limit for php on websites?

Answer 2

different server architecture. On one 32-bit, on the other 64.
Also, the identity of the product plays little role here. Such a homocode as opencart probably consumes half of the database when displaying one product.