Getting this error

Fatal error: Uncaught Error: Call to a member function get_billing_postcode() on null in /home/tvattdax/public_html/wp-content/plugins/inext-woo-pincode-checker/views/basic/class-basic-views.php:70 Stack trace: #0 /home/tvattdax/public_html/wp-content/plugins/inext-woo-pincode-checker/views/basic/class-basic-views.php(46): INEXT_WPC_BASIC_VIEWS::inext_wpc_html_callback() #1 /home/tvattdax/public_html/wp-includes/shortcodes.php(433): INEXT_WPC_BASIC_VIEWS::inext_wpc_shortcode_action_callback() #2 [internal function]: do_shortcode_tag() #3 /home/tvattdax/public_html/wp-includes/shortcodes.php(273): preg_replace_callback() #4 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(246): do_shortcode() #5 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/templates/shortcodes/vc_raw_html.php(21): wpb_js_remove_wpautop() #6 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(451): require(‘/home/tvattdax/…’) #7 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(424): WPBakeryShortCode->loadTemplate() #8 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(546): WPBakeryShortCode->content() #9 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(1323): WPBakeryShortCode->output() #10 /home/tvattdax/public_html/wp-includes/shortcodes.php(433): vc_do_shortcode() #11 [internal function]: do_shortcode_tag() #12 /home/tvattdax/public_html/wp-includes/shortcodes.php(273): preg_replace_callback() #13 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(246): do_shortcode() #14 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/templates/shortcodes/vc_column.php(94): wpb_js_remove_wpautop() #15 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(451): require(‘/home/tvattdax/…’) #16 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(424): WPBakeryShortCode->loadTemplate() #17 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(546): WPBakeryShortCode->content() #18 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(1323): WPBakeryShortCode->output() #19 /home/tvattdax/public_html/wp-includes/shortcodes.php(433): vc_do_shortcode() #20 [internal function]: do_shortcode_tag() #21 /home/tvattdax/public_html/wp-includes/shortcodes.php(273): preg_replace_callback() #22 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(246): do_shortcode() #23 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/templates/shortcodes/vc_row.php(156): wpb_js_remove_wpautop() #24 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(451): require(‘/home/tvattdax/…’) #25 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/vc-row.php(40): WPBakeryShortCode->loadTemplate() #26 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(546): WPBakeryShortCode_Vc_Row->content() #27 /home/tvattdax/public_html/wp-content/plugins/js_composer/include/helpers/helpers.php(1323): WPBakeryShortCode->output() #28 /home/tvattdax/public_html/wp-includes/shortcodes.php(433): vc_do_shortcode() #29 [internal function]: do_shortcode_tag() #30 /home/tvattdax/public_html/wp-includes/shortcodes.php(273): preg_replace_callback() #31 /home/tvattdax/public_html/wp-includes/class-wp-hook.php(324): do_shortcode() #32 /home/tvattdax/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters() #33 /home/tvattdax/public_html/wp-content/plugins/wordpress-seo/src/builders/indexable-link-builder.php(117): apply_filters() #34 /home/tvattdax/public_html/wp-content/plugins/wordpress-seo/src/integrations/watchers/indexable-post-watcher.php(209): Yoast\WP\SEO\Builders\Indexable_Link_Builder->build() #35 /home/tvattdax/public_html/wp-includes/class-wp-hook.php(326): Yoast\WP\SEO\Integrations\Watchers\Indexable_Post_Watcher->build_indexable() #36 /home/tvattdax/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #37 /home/tvattdax/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #38 /home/tvattdax/public_html/wp-includes/post.php(4771): do_action() #39 /home/tvattdax/public_html/wp-includes/post.php(4862): wp_insert_post() #40 /home/tvattdax/public_html/wp-admin/includes/post.php(453): wp_update_post() #41 /home/tvattdax/public_html/wp-admin/post.php(227): edit_post() #42 {main} thrown in?/XXXXXX/wp-content/plugins/inext-woo-pincode-checker/views/basic/class-basic-views.php?on line?70