plugin update crashed my site

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After updating the plugin my website is showing only fatal error….please help i didnt backup the site also

Fatal error: Cannot redeclare is_question_categories() (previously declared in /home/sree1212/public_html/wp-content/plugins/anspress-question-answer/includes/functions.php:160) in /home/sree1212/public_html/wp-content/plugins/categories-for-anspress/categories-for-anspress.php on line 568