Continuing to work on this, I found a great thread at:
viewtopic.php?t=2544871
./bin/phpbbcli.php cron:list
PHP Warning: PHP Startup: Unable to load dynamic library 'curl' (tried: /usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl(/usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl: cannot open shared object file: No such file or directory), /usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl.so (/usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Tarea preparada:
================
* cron.task.core.prune_all_forums
* cron.task.core.tidy_warnings
* cron.task.text_reparser.poll_option
* cron.task.text_reparser.poll_title
* cron.task.text_reparser.post_text
* cron.task.text_reparser.user_signature
Tarea no preparada:
===================
* cron.task.core.prune_forum
* cron.task.core.prune_shadow_topics
* cron.task.core.prune_notifications
* cron.task.core.queue
* cron.task.core.tidy_cache
* cron.task.core.tidy_database
* cron.task.core.tidy_plupload
* cron.task.core.tidy_search
* cron.task.core.tidy_sessions
* cron.task.text_reparser.pm_text
* cron.task.core.update_hashes
The result of running cron manually is:
./bin/phpbbcli.php cron:run -vvv
PHP Warning: PHP Startup: Unable to load dynamic library 'curl' (tried: /usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl(/usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl: cannot open shared object file: No such file or directory), /usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl.so (/usr/local/php7.4/lib/php/extensions/no-debug-non-zts-20190902/curl.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Ejecutando tarea: cron.task.core.prune_all_forums.
Ejecutando tarea: cron.task.core.prune_notifications.
Ejecutando tarea: cron.task.core.tidy_cache.
Ejecutando tarea: cron.task.core.tidy_database.
Ejecutando tarea: cron.task.core.tidy_plupload.
Ejecutando tarea: cron.task.core.tidy_search.
Ejecutando tarea: cron.task.core.tidy_sessions.
PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 6399680 bytes) in /home/www/forum.altosdecerroazulresidencial.org/phpbb3/phpbb/db/driver/driver.php on line 599
I'm not sure what to do to correct the fatal error.