error_log

[26-Nov-2018 09:41:14 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function open_db_conn() in /home4/nikhilnl/public_html/Marketplace/php/get_cart.php:4
Stack trace:
#0 /home4/nikhilnl/public_html/Marketplace/php/get_cart.php(42): get_cart()
#1 {main}
  thrown in /home4/nikhilnl/public_html/Marketplace/php/get_cart.php on line 4
[26-Nov-2018 20:08:10 UTC] PHP Warning:  mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /home4/nikhilnl/public_html/Marketplace/php/get_cart.php on line 15