Warning: Trying to access array offset on value of type null in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php on line 7

Warning: Trying to access array offset on value of type null in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php on line 8

Warning: Trying to access array offset on value of type null in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php on line 9

Warning: Trying to access array offset on value of type null in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php on line 10

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\HappyFish\water_quality\get_quality_score.php on line 12