Make sure the cron account and the webserver account are the same.

Sounds like something that's causing me a problem. When I try to clear the cache, I get this error:

ELGG.CRITICAL: Exception at time 1587668791:
UnexpectedValueException: RecursiveDirectoryIterator::__construct(/var/www/elgg/data/caches/stash/0fea6a13c52b4d47/25368f24b045ca84/38a865804f8fdcb6/57cd99682e939275/470dcd7b646bfcf1/6d7f0e85bd145ac4/dca130d8a1c165eb): 

 Where the access rights to the folder

dca130d8a1c165eb

are at the root but not at the webserver. If I disable the Cron, everything works fine.

Can you help me figure out how to set the permissions to the cron account and webserver same?

Thanks for help

But it logs for other intervals such as fiveminute, halfhour, hourly, etc. EXCEPT daily, weekly, or my custom intervals.

Can you help me figure out how to set the permissions to the cron account and webserver same?

Run the cron jobs from the crontab of the webserver account, that's easiest. Otherwise sudo -u <webserver account> elgg-cli ....

@ronnim Read this also.

@seri_ng Do you have any of the things I advised you to do?

@RvR No I do not have 'elgg_log( )' in my function BUT that still does not explain other fiveminute cron hook though. When I tested using fiveminute interval rather than daily interval, without 'elgg_log( )' in my function it logged the cron details.

Let's start from beggining.

Configs:

My webserver name is www-data

My Elgg is installed in /var/www/elgg

My PHP is executed from /usr/bin/php

Cronjob installation:

Run crontab as webserver user:

crontab -u www-data -e

Set only 1 cronjob:

* * * * * /usr/bin/php /var/www/elgg/vendor/bin/elgg-cli cron -q

Save crontab.

Check it:

crontab -u www-data -l

Make cron trigger in your plugin:

start.php / Bootstrap class:

elgg_register_plugin_hook_handler('cron', 'daily', 'my_cronjob_function');

function my_cronjob_function(\Elgg\Hook $hook) {
    echo 'Starting cronjob' . PHP_EOL;
    elgg_log('Starting cronjob', 'NOTICE');

    // ignore access
    elgg_call(ELGG_IGNORE_ACCESS, function() {
         //do it something here
    });

    echo 'Done with cronjob' . PHP_EOL;
    elgg_log('Done with cronjob', 'NOTICE');
}

• Use 'ignore access' always
• Use the mentioned logs samples before/after cronjob always.
• SSL on the site is required (it's reason why you've issues on the localhost).

Thanks for step-by-step instructions RvR!