Undergraduate

Fatal error: Uncaught Error: Call to undefined function mb_strtolower()
in /home/nd_coe_admin/sites/stage/wp-content/plugins/ultimate-addons-for-gutenberg/blocks-config/table-of-content/class-uagb-table-of-content.php on line 228

Call stack:

1. UAGB_Table_Of_Content::clean()
   wp-content/plugins/ultimate-addons-for-gutenberg/blocks-config/table-of-content/class-uagb-table-of-content.php:188

Notice: Undefined index: file in /home/nd_coe_admin/sites/stage/wp-content/plugins/query-monitor/collectors/php_errors.php on line 364

Notice: Undefined index: line in /home/nd_coe_admin/sites/stage/wp-content/plugins/query-monitor/collectors/php_errors.php on line 364

2. UAGB_Table_Of_Content::{closure}()
3. array_map()
   wp-content/plugins/ultimate-addons-for-gutenberg/blocks-config/table-of-content/class-uagb-table-of-content.php:194
4. UAGB_Table_Of_Content::table_of_contents_get_headings_from_content()
   wp-content/plugins/ultimate-addons-for-gutenberg/blocks-config/table-of-content/class-uagb-table-of-content.php:462
5. UAGB_Table_Of_Content::render_table_of_contents()
   wp-includes/class-wp-block.php:463
6. WP_Block::render()
   wp-includes/blocks.php:1733
7. render_block()
   wp-includes/blocks.php:1771
8. do_blocks()
   wp-includes/class-wp-hook.php:324
9. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
10. apply_filters()
    wp-includes/post-template.php:256
11. the_content()
    wp-content/themes/ndt3-wp-master/template-parts/content-page.php:133
12. require()
    wp-includes/template.php:812
13. load_template()
    wp-includes/template.php:745
14. locate_template()
    wp-includes/general-template.php:206
15. get_template_part()
    wp-content/themes/ndt3-wp-master/templates/template-full-width-header-left-nav.php:29
16. include()
    wp-includes/template-loader.php:106
17. require_once()
    wp-blog-header.php:19
18. require()
    index.php:17