Fatal error: Uncaught Error: Call to undefined function ctype_upper() in /home/xarbopdx/public_html/wp-content/mu-plugins/endurance-page-cache.php:474
Stack trace:
#0 /home/xarbopdx/public_html/wp-includes/class-wp-hook.php(307): Endurance_Page_Cache->option_handler('_transient_doin...', '1674769835.5468...', '1674769985.5560...')
#1 /home/xarbopdx/public_html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#2 /home/xarbopdx/public_html/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#3 /home/xarbopdx/public_html/wp-includes/option.php(541): do_action('updated_option', '_transient_doin...', '1674769835.5468...', '1674769985.5560...')
#4 /home/xarbopdx/public_html/wp-includes/option.php(966): update_option('_transient_doin...', '1674769985.5560...')
#5 /home/xarbopdx/public_html/wp-includes/cron.php(894): set_transient('doing_cron', '1674769985.5560...')
#6 /home/xarbopdx/public_html/wp-includes/cron.php(1004): spawn_cron(1674769985.56)
#7 /home/xarbopdx/public_html/wp-includes/class-wp-hook.ph in /home/xarbopdx/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 474