TROUBLESHOOTING: Primer version 1.8.6 works perfectly and loads popup window. When updating theme it breaks this function and displays WordPress 5.2.x new 500 ISE error message.

ERROR_LOG PHP Fatal error: Uncaught Error: Call to a member function is_block_editor() on null in /var/www/wp-content/themes/primer/functions.php:409 Stack trace:

0 /var/www/wp-includes/class-wp-hook.php(284): primer_classic_editor_styles()

1 /var/www/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(false, Array)

2 /var/www/wp-includes/plugin.php(465): WP_Hook->do_action(Array)

3 /var/www/wp-content/plugins/powerpress/powerpressadmin-jquery.php(1060): do_action('admin_print_sty...')

4 /var/www/wp-content/plugins/powerpress/powerpressadmin-jquery.php(289): powerpress_admin_jquery_header('Select Media', true)

5 /var/www/wp-content/plugins/powerpress/powerpressadmin.php(96): powerpress_admin_jquery_init()

6 /var/www/wp-includes/class-wp-hook.php(286): powerpress_admin_init('')

7 /var/www/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)

8 /var/www/wp-includes/plugin.php(465): WP_Hook->do_action(Array)

9 /var/www/wp-admin/admin.php(169): do_action('admin_init')

10 {main}

thrown in /var/www/wp-content/themes/primer/functions.php on line 409

godaddy-wordpress / primer

Primer theme update to 1.8.7 breaks Blubrry plugin on PHP version 7.x when trying to upload media. Popup displays WordPress 500 ISE. #292