Fatal error: Uncaught Error: Call to undefined function wp_rand() in /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php:1231
Stack trace:
#0 /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php(1246): wpsc_debug_username()
#1 /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php(767): wpsc_create_debug_log('/var/www/html/w...', '')
#2 /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php(1160): wp_cache_debug('wpsc_is_caching...')
#3 /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase1.php(130): wpsc_is_caching_user_disabled()
#4 /var/www/html/wp-content/advanced-cache.php(22): include_once('/var/www/html/w...')
#5 /var/www/html/wp-settings.php(100): include('/var/www/html/w...')
#6 /var/www/html/wp-config.php(147): require_once('/var/www/html/w...')
#7 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#8 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#9 /var/www/html/index.php(17): require('/var/www/html/w...')
#10 {main}
  thrown in /var/www/html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 1231