Fatal error: Uncaught Error: Call to a member function get_survey_answer() on null in /home/krflaon/www/wp-content/plugins/hovta-quizz/templates/survey_answer/single-survey.php:158 Stack trace: #0 /home/krflaon/www/wp-includes/template-loader.php(106): include() #1 /home/krflaon/www/wp-blog-header.php(19): require_once('/home/krflaon/w...') #2 /home/krflaon/www/index.php(17): require('/home/krflaon/w...') #3 {main} thrown in /home/krflaon/www/wp-content/plugins/hovta-quizz/templates/survey_answer/single-survey.php on line 158