Initialization of memcache leads to an error, the logs are empty. What to do?

Question

PHP

I've been trying to run someone else's project locally for a few days now. As soon as the code reaches the line, it crashes into a white screen. Those. if before this line it is stupid to put die('jopa'); then jopa will be displayed on the screen. If after, nothing will be displayed. Environment: Mac OS Bigsur MAMP PRO 5.7 Apache PHP 5.4.45 (old and alien project) PHP log is enabled at the E_ERROR level, the log is empty. If you turn on the output of everything, then there will be several notations that are not relevant to the case. Apache and Memcached logs are also enabled and empty. Completely empty. I smoked the entire Internet about MAMP Memcache, nothing interesting, I tried to apply a couple of answers that are there, but it's not that. What else can be done?
$mem = new Memcache;





memcached section in phpinfo():