Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method OglethorpeForms::oglethorpe_register_session() cannot be called statically in /home/springbrookhospi/dev.springbrookhospital.org/wp-includes/class-wp-hook.php:307 Stack trace: #0 /home/springbrookhospi/dev.springbrookhospital.org/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #1 /home/springbrookhospi/dev.springbrookhospital.org/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #2 /home/springbrookhospi/dev.springbrookhospital.org/wp-settings.php(598): do_action('init') #3 /home/springbrookhospi/dev.springbrookhospital.org/wp-config.php(174): require_once('/home/springbro...') #4 /home/springbrookhospi/dev.springbrookhospital.org/wp-load.php(50): require_once('/home/springbro...') #5 /home/springbrookhospi/dev.springbrookhospital.org/wp-blog-header.php(13): require_once('/home/springbro...') #6 /home/springbrookhospi/dev.springbrookhospital.org/index.php(17): require('/home/springbro...') #7 {main} thrown in /home/springbrookhospi/dev.springbrookhospital.org/wp-includes/class-wp-hook.php on line 307