Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, null given in /var/git/new_bams1/src/molecules/show-chemoexp.php:146 Stack trace: #0 /var/git/new_bams1/src/molecules/show-chemoexp.php(146): mysqli_num_rows() #1 /var/git/new_bams1/src/molecules/show-chemoexp.php(259): bub() #2 {main} thrown in /var/git/new_bams1/src/molecules/show-chemoexp.php on line 146