What is the cause of this error message?

[swake]

This error message always appears in the error logbook
Sources/tasks/ApprovePost-Notify.php
line 44   $request = $smcFunc['db_query']('', '

Type of critical
Database error , given array of integer values is empty . (members)
Function : execute

How can this be remedied?

Version 2.16

[Kindred]

Please provide the whole error message

[swake]

I copied the error messages and the corresponding backtrace

#0: smf_db_error_backtrace()
Aangeroepen van /data/sites/web/erotiek-en-seksbe/www/forum/Sources/Subs-Db-mysql.php op regel 222

==>   smf_db_error_backtrace('Database error, given array of integer values is empty. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);



#1: smf_db_replacement__callback()
Aangeroepen van onbekend op regel -1

#2: preg_replace_callback()
Aangeroepen van /data/sites/web/erotiek-en-seksbe/www/forum/Sources/Subs-Db-mysql.php op regel 409

==>409         $db_string = preg_replace_callback('~{([a-z_]+)(?:[a-zA-Z0-9_-]+))?}~', 'smf_db_replacement__callback', $db_string);


#3: smf_db_query()
Aangeroepen van /data/sites/web/erotiek-en-seksbe/www/forum/Sources/tasks/ApprovePost-Notify.php op regel 44

==>44         $request = $smcFunc['db_query']('', '

#4: execute()
Aangeroepen van /data/sites/web/erotiek-en-seksbe/www/forum/cron.php op regel 250

==250 return $bgtask->execute();

#5: perform_task()
Aangeroepen van /data/sites/web/erotiek-en-seksbe/www/forum/cron.php op regel 132

==>132:      $result = perform_task($task_details);

[Kindred]

Mods installed?

[swake]

mods are installed
There will also no longer be any confirmation emails sent when a new member registers, or when a member forgets their password. And there will also no longer be any notification emails sent.

[shawnb61]

Do you have any records in the background tasks table?

I would delete the oldest one.  Something is hanging it up.