Fatal error: Uncaught Error: Call to undefined function get_gallery() in /www/wwwroot/rongqin2021/wp-content/themes/rongqin/single.php:13 Stack trace: #0 /www/wwwroot/rongqin2021/wp-includes/template-loader.php(106): include() #1 /www/wwwroot/rongqin2021/wp-blog-header.php(19): require_once('...') #2 /www/wwwroot/rongqin2021/index.php(17): require('...') #3 {main} thrown in /www/wwwroot/rongqin2021/wp-content/themes/rongqin/single.php on line 13