Fatal error: __autoload() is no longer supported, use spl_autoload_register() instead in /virtual/htdocs/ikou_www/ikeda/blog/yama/wp-includes/compat.php on line 502

Fatal error: Uncaught Error: Call to undefined function wp_is_maintenance_mode() in /virtual/htdocs/ikou_www/ikeda/blog/yama/wp-includes/class-wp-fatal-error-handler.php:37
Stack trace:
#0 [internal function]: WP_Fatal_Error_Handler->handle()
#1 {main}
  thrown in /virtual/htdocs/ikou_www/ikeda/blog/yama/wp-includes/class-wp-fatal-error-handler.php on line 37