Internal Server Error

Array
(
    [0] => 2023-12-09 11:22:26
    [1] => 256
    [2] => exception 'Exception' with message 'course_detail primary[001 + 18054] is not found.' in /var/www/html/yc/mod/cruise.php:694
Stack trace:
#0 /var/www/html/yc/act/cruise.php(332): mod_cruise->get_course('001', '18054', NULL, '2023-12-09 11:2...')
#1 /var/www/html/yc/lib/dired/web.php(291): cruise->course_calendar()
#2 /var/www/html/yc/index.php(31): require_once('/var/www/html/y...')
#3 {main}
    [3] => /var/www/html/yc/lib/dired/function.php
    [4] => 153
)