More details from my host
It seems to be happening when pages are being viewed -
2021/06/11 15:00:14 [error] 9438#9438: *94115 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Call to a member function get_variation_attributes() on bool in /srv/www/mydomain.com/public_html/wp-content/plugins/woo-virtual-reviews/includes/display-comment.php:193
Stack trace:
#0 /srv/www/mydomain.com/public_html/wp-includes/class-wp-hook.php(292): WooVR\Display_Comment->show_comments(Object(WP_Comment))
#1 /srv/www/mydomain.com/public_html/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters('', Array)
#2 /srv/www/mydomain.com/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#3 /srv/www/mydomain.com/public_html/wp-content/themes/flatsome/woocommerce/single-product/review.php(63): do_action('woocommerce_rev...', Object(WP_Comment))
#4 /srv/www/mydomain.com/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php(345): include('/srv/www/mydomain...')
#5 /srv/www/mydomain.com/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(1873): wc_get_template('single-product/" while reading response header from upstream, client: 66.249.73.37, server: www.mydomain.com, request: "GET /product/myproduct/?attribute_size=iPhone+11+Pro HTTP/1.0", upstream: "fastcgi://127.0.0.1:7000", host: "www.mydomain.com"
