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Fatal error: Uncaught Error: Call to a member function using_index_permalinks() on null in /home/customer/www/gatherdc.org/public_html/wp-includes/rest-api.php:403 Stack trace: #0 /home/customer/www/gatherdc.org/public_html/wp-includes/rest-api.php(925): get_rest_url() #1 /home/customer/www/gatherdc.org/public_html/wp-includes/class-wp-hook.php(290): rest_output_link_wp_head() #2 /home/customer/www/gatherdc.org/public_html/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(Array, Array) #3 /home/customer/www/gatherdc.org/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #4 /home/customer/www/gatherdc.org/public_html/wp-content/plugins/formassembly-web-forms/wp_formassembly.php(35): do_action('wp_head', 'fa_referrer_hea...') #5 /home/customer/www/gatherdc.org/public_html/wp-settings.php(391): include_once('/home/customer/...') #6 /home/customer/www/gatherdc.org/public_html/wp-config.php(83): require_once('/home/customer/...') #7 /home/customer/www/gatherdc.org/public_html/wp-load.php(37): require_o in /home/customer/www/gatherdc.org/public_html/wp-includes/rest-api.php on line 403