1: Start of page
2: Before function called
3: Inside total() function
Fatal error: Uncaught TypeError: Unsupported operand types: float + string in /home/tcpgjmruus9n/public_html/phpbook/section_b/c10/development/tracking-down-errors.php:12
Stack trace:
#0 /home/tcpgjmruus9n/public_html/phpbook/section_b/c10/development/tracking-down-errors.php(18): total()
#1 {main}
thrown in /home/tcpgjmruus9n/public_html/phpbook/section_b/c10/development/tracking-down-errors.php on line 12