The full-time task scheduler stopped working

While working in the mode of generating reports through the browser, but it is very slow and heavily loads the system
It is not clear why the planner suddenly fell? 256 MB are allocated to the PCP process memory, as it was.
Php version 7.3
sudo /usr/bin/php /var/www/ core:archive --url=

PHP Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 36864 bytes) in /var/www/ on line 250