Fatal error: Uncaught Error: Call to undefined function create_function() in /home/.sites/144/site798/web/wp/wp-content/plugins/newsletter/widget.php:168
Stack trace:
#0 /home/.sites/144/site798/web/wp/wp-content/plugins/newsletter/plugin.php(1311): require_once()
#1 /home/.sites/144/site798/web/wp/wp-settings.php(215): include_once('/home/.sites/14...')
#2 /home/.sites/144/site798/web/wp/wp-config.php(88): require_once('/home/.sites/14...')
#3 /home/.sites/144/site798/web/wp/wp-load.php(37): require_once('/home/.sites/14...')
#4 /home/.sites/144/site798/web/wp/wp-blog-header.php(12): require_once('/home/.sites/14...')
#5 /home/.sites/144/site798/web/wp/index.php(17): require('/home/.sites/14...')
#6 {main}
  thrown in /home/.sites/144/site798/web/wp/wp-content/plugins/newsletter/widget.php on line 168