Warning: Undefined variable $id in /home/qyachtco/public_html/app/views/boat-details.php on line 14

Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 in /home/qyachtco/public_html/app/core/functions.php:240 Stack trace: #0 /home/qyachtco/public_html/app/core/functions.php(240): PDOStatement->execute() #1 /home/qyachtco/public_html/app/views/boat-details.php(14): select_by_id('boats', NULL) #2 /home/qyachtco/public_html/router.php(64): include_once('/home/qyachtco/...') #3 /home/qyachtco/public_html/router.php(4): route('/boat-details', 'app/views/boat-...') #4 /home/qyachtco/public_html/index.php(29): get('/boat-details', 'app/views/boat-...') #5 {main} thrown in /home/qyachtco/public_html/app/core/functions.php on line 240