Uncaught Error: Call to a member function getAttribute() on null
in /home/ismailfa/public_html/wp-content/plugins/url2cite-main/url2cite.php on line 203

Call stack:

1. URL2Cite::fetch_metadata('http://en.wikipedia.org/wiki/Iran_hostage_crisis')
   wp-content/plugins/url2cite-main/url2cite.php:155
2. URL2Cite::generate_citation('http://en.wikipedia.org/wiki/Iran_hostage_crisis')
   wp-content/plugins/url2cite-main/url2cite.php:351

Warning: Undefined array key "file" in /home/ismailfa/public_html/wp-content/plugins/query-monitor/dispatchers/Html.php on line 1022

Warning: Undefined array key "line" in /home/ismailfa/public_html/wp-content/plugins/query-monitor/dispatchers/Html.php on line 1022

3. URL2Cite::{closure}(array)
4. preg_replace_callback('/https?:\/\/[\w\.-]+(?:\/[\w\-\.\/?=&%#]*)?/', Closure, '<span class="span-re...r details.</em></p> ')
   wp-content/plugins/url2cite-main/url2cite.php:348
5. URL2Cite::auto_detect_urls('<span class="span-re...r details.</em></p> ')
   wp-includes/class-wp-hook.php:324
6. WP_Hook::apply_filters('<span class="span-re...r details.</em></p> ', array)
   wp-includes/plugin.php:205
7. apply_filters('the_content', 'Certainly no Muslim ...a> for details.</em>')
   wp-includes/post-template.php:256
8. the_content()
   wp-content/themes/Newspaper/loop-single.php:69
9. require('/home/ismailfa/publi...aper/loop-single.php')
   wp-includes/template.php:812
10. load_template('/home/ismailfa/publi...aper/loop-single.php', false, array)
    wp-includes/template.php:745
11. locate_template(array, true, false, array)
    wp-includes/general-template.php:206
12. get_template_part('loop-single')
    wp-content/themes/Newspaper/single.php:20
13. include('/home/ismailfa/publi...Newspaper/single.php')
    wp-includes/template-loader.php:106
14. require_once('/home/ismailfa/publi.../template-loader.php')
    wp-blog-header.php:19
15. require('/home/ismailfa/public_html/wp-blog-header.php')
    index.php:17