Fatal error: Uncaught TypeError: mktime(): Argument #6 ($year) must be of type ?int, string given in /var/www/wp-includes/class-wp-date-query.php:320
Stack trace:
#0 /var/www/wp-includes/class-wp-date-query.php(320): mktime(0, 0, 0, 12, 31, '')
#1 /var/www/wp-includes/class-wp-date-query.php(220): WP_Date_Query->validate_date_values(Array)
#2 /var/www/wp-includes/class-wp-date-query.php(232): WP_Date_Query->sanitize_query(Array, Array)
#3 /var/www/wp-includes/class-wp-date-query.php(174): WP_Date_Query->sanitize_query(Array)
#4 /var/www/wp-includes/class-wp-query.php(2106): WP_Date_Query->__construct(Array)
#5 /var/www/wp-includes/class-wp-query.php(3852): WP_Query->get_posts()
#6 /var/www/wp-includes/class-wp-query.php(3984): WP_Query->query(Array)
#7 /var/www/wp-content/themes/dexco/archive.php(233): WP_Query->__construct(Array)
#8 /var/www/wp-includes/template-loader.php(106): include('/var/www/wp-con...')
#9 /var/www/wp-blog-header.php(19): require_once('/var/www/wp-inc...')
#10 /var/www/index.php(17): require('/var/www/wp-blo...')
#11 {main}
thrown in /var/www/wp-includes/class-wp-date-query.php on line 320