Uncaught ReferenceError: poll_result is not defined

In my last question, You give me this solution

Ensure Your Theme Has <?php wp_head(); ?> in the header.php & <?php wp_footer(); ?> in the footer.php

In my template I found <?php wp_head(); ?> in the header.php AND <?php wp_footer(); ?> in the footer.php`

But still didn’t work.

When I click show result btn, In chrome console, show “Uncaught ReferenceError: poll_result is not defined “

This is my web site: http://www.zhunmama.cn/p/271.html#ViewPollResults

https://wordpress.org/plugins/wp-polls/