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Fatal error: Uncaught Error: array_key_first(): Argument #1 ($array) must be of type array, null given
in /var/www/vhosts/archiv.global/de.archiv.global/web/app/themes/sparkling-child/template-parts/inc/sidebar/list-filters-wiki.php on line 45

Call stack:

1. array_key_first()
   app/themes/sparkling-child/template-parts/inc/sidebar/list-filters-wiki.php:45
2. require()
   wp-includes/template.php:812
3. load_template()
   wp-includes/template.php:745
4. locate_template()
   wp-includes/general-template.php:206
5. get_template_part()
   app/themes/sparkling-child/functions.php:196
6. {closure}()
   wp-includes/shortcodes.php:434

Warning: Undefined array key "file" in /var/www/vhosts/archiv.global/de.archiv.global/web/app/plugins/query-monitor/collectors/php_errors.php on line 364

Warning: Undefined array key "line" in /var/www/vhosts/archiv.global/de.archiv.global/web/app/plugins/query-monitor/collectors/php_errors.php on line 364

7. do_shortcode_tag()
8. preg_replace_callback()
   wp-includes/shortcodes.php:273
9. do_shortcode()
   wp-includes/class-wp-hook.php:324
10. WP_Hook::apply_filters()
    wp-includes/plugin.php:205
11. apply_filters()
    wp-includes/post-template.php:256
12. the_content()
    app/themes/sparkling-child/template-parts/content-page.php:62
13. require()
    wp-includes/template.php:812
14. load_template()
    wp-includes/template.php:745
15. locate_template()
    wp-includes/general-template.php:206
16. get_template_part()
    app/themes/sparkling/page-fullwidth.php:21
17. include()
    wp-includes/template-loader.php:106
18. require_once()
    wp-blog-header.php:19
19. require()
    index.php:6