error – in woocommerce file – Call to a member function is_visible() on null

Hi Support team,   I am continuously getting this error. Can you please let me know how to resolve this   2019/04/27 12:41:37 [error] 1717#0: *366327 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Call to a member function is_visible() on null in /var/www/intellipaat.com/htdocs/wp-content/themes/wplms/woocommerce/content-product.php on line 25 PHP message: PHP Stack trace: PHP message: PHP   1. {main}() /var/www/intellipaat.com/htdocs/index.php:0 PHP message: PHP   2. require() /var/www/intellipaat.com/htdocs/index.php:17 PHP message: PHP   3. require_once() /var/www/intellipaat.com/htdocs/wp-blog-header.php:19 PHP message: PHP   4. include() /var/www/intellipaat.com/htdocs/wp-includes/template-loader.php:74 PHP message: PHP   5. wc_get_template_part() /var/www/intellipaat.com/htdocs/wp-content/themes/intellipaat/woocommerce/archive-product.php:93 PHP message: PHP   6. load_template() /var/www/intellipaat.com/htdocs/wp-content/plugins/woocommerce/includes/wc-core-functions.php:181 PHP message: PHP   7. require() /var/www/intellipaat.com/htdocs/wp-includes/template.php:690" while reading response header from upstream, client: 185.93.229.2, server: intellipaat.com, request: "GET /linkage/trainingname-training/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "intellipaat.com", referrer: "https://intellipaat.com/linkage/trainingname-training/"