Exception class: TypeError()

implode(): Argument #1 ($pieces) must be of type array, string given


Backtrace:

#0 C:\xampp\htdocs\system\pages\spells.php(68): implode('
', NULL)
#1 C:\xampp\htdocs\index.php(347): require('C:\\xampp\\htdocs...')
#2 {main}