Add Custom Social Login Buttons Under Comments

Hello,

I am trying to add social login buttons under comments. For visitors there is a code like this : but its not working can you help me?
must_log_in' => '<p class="must-log-in">'.sprintf(__('Yorum yazmak i?in kay?t olman?z gerekmektedir. <strong><a href="https://www.pckopat.net/uyeol/">Buraya T?klayarak</a></strong> h?zl?ca kay?t olun.', 'gp_lang'), wp_login_url(apply_filters('the_permalink', get_permalink()))oa_social_login()).'</p>'

https://www.ads-software.com/plugins/oa-social-login/