Fatal error: Uncaught Error: Call to undefined function wp_get_additional_image_sizes() in /home/customer/www/workcpace.com/public_html/wp-includes/media.php:63 Stack trace: #0 /home/customer/www/workcpace.com/public_html/wp-includes/media.php(266): image_constrain_size_for_editor(16, 16, 'full') #1 /home/customer/www/workcpace.com/public_html/wp-includes/media.php(953): image_downsize('2956', 'full') #2 /home/customer/www/workcpace.com/public_html/wp-includes/media.php(1131): wp_get_attachment_image_src('2956', 'full', false) #3 /home/customer/www/workcpace.com/public_html/wp-includes/general-template.php(936): wp_get_attachment_image_url('2956', 'full') #4 /home/customer/www/workcpace.com/public_html/wp-includes/general-template.php(977): get_site_icon_url(512, '', 0) #5 /home/customer/www/workcpace.com/public_html/wp-includes/general-template.php(3223): has_site_icon() #6 /home/customer/www/workcpace.com/public_html/wp-includes/class-wp-hook.php(303): wp_site_icon('') #7 /home/customer/www/workcpace.com/public_html/wp- in /home/customer/www/workcpace.com/public_html/wp-includes/media.php on line 63