Cannot delete log files

Problem in logfiles version 13.0.7:

1. Go to Settings -> Asterisk Logfile Settings

2. Click on trashcan icon for 'full' log file, Click OK to confirm, click Submit, click Apply Config.

3. Click on trashcan icon for 'console' log file, click OK to confirm, click Submit, click Apply Config.

FATAL ERRORInvalid argument supplied for foreach()Trace Back: die_freepbx()   [0]: Invalid argument supplied for foreach() /var/www/html/admin/libraries/sql.functions.php:138 call_user_func()   [0]: die_freepbx   [1]: Invalid argument supplied for foreach() /var/www/html/admin/modules/logfiles/functions.inc.php:348 db_e() /var/www/html/admin/modules/logfiles/header.php:39 logfiles_put_opts() /var/www/html/admin/modules/logfiles/page.logfiles_settings.php:2 require_once()   [0]: /var/www/html/admin/modules/logfiles/header.php /var/www/html/admin/config.php:543 include()   [0]: /var/www/html/admin/modules/logfiles/page.logfiles_settings.php