Fatal error: Uncaught ValueError: imagecreate(): Argument #1 ($width) must be greater than 0 in /var/www/clients/client1/web8/web/event/thermometer.php:27 Stack trace: #0 /var/www/clients/client1/web8/web/event/thermometer.php(27): imagecreate() #1 /var/www/clients/client1/web8/web/event/thermometer.php(117): thermGraph() #2 {main} thrown in /var/www/clients/client1/web8/web/event/thermometer.php on line 27