Not working shortcode

Hi,

I have use short code by do_shortcode();
echo do_shortcode(‘[nextend_social_login]’);

it not working showing like this– https://imgur.com/b4uhJ9q

I have also use your php code from here–https://nextendweb.com/nextend-social-login-docs/theme-developer/ shoring white area.

please let me how can shove it.

thank you