Error after installation and copying object-cache.php

[TomaIvanovTomov]

Hello, what I get as error is:
Fatal error: Uncaught Error: Call to undefined function trm_suspend_cache_addition() in /var/www/html/trm-src/object-cache.php:414 Stack trace: #0 /var/www/html/trm-src/object-cache.php(30): TRM_Object_Cache->add() #1 /var/www/html/Source-zACHAvU6As28quwr-trendr/functions.php(469): trm_cache_add() #2 /var/www/html/Source-zACHAvU6As28quwr-trendr/functions.php(1837): trm_load_alloptions() #3 /var/www/html/Source-zACHAvU6As28quwr-trendr/load.php(430): is_blog_installed() #4 /var/www/html/trm-main.php(107): trm_not_installed() #5 /var/www/html/trm-setup.php(90): require_once('/var/www/html/t...') #6 /var/www/html/initiate.php(29): require_once('/var/www/html/t...') #7 /var/www/html/trm-header.php(12): require_once('/var/www/html/i...') #8 /var/www/html/index.php(17): require('/var/www/html/t...') #9 {main} thrown in /var/www/html/trm-src/object-cache.php on line 414
PHP Version is 7.4 . OPCache is enabled and all directives are set like in the readme file.