Calling Class: jerram\artists_pdo_class.php
Exception class: config_class.php

#0 /home/jerramgallery/php_includes/config_class.php(110): number_format()
#1 /home/jerramgallery/public_html/pages/artist-under-500.php(63): config->format_price()
#2 /home/jerramgallery/php_includes/init/theme_init_class.php(48): include('...')
#3 /home/jerramgallery/public_html/includes/autoloader.php(41): init\theme_init::init()
#4 {main}

number_format(): Argument #1 ($num) must be of type int|float, string given