Uncaught Error: Call to undefined function is_user_chilan()
in /home/chilanon/public_html/wp-content/themes/chilan/single.php on line 35

Call stack:

1. include()
   wp-includes/template-loader.php:106
2. require_once('/home/chilanon/publi.../template-loader.php')
   wp-blog-header.php:19
3. require('/home/chilanon/public_html/wp-blog-header.php')
   index.php:17