Error after update

Hi, after update 1.2.0 I got this error on my blog -page(I have debug on):

Notice: Trying to get property of non-object in /var/www/upoc/wp-content/plugins/woocommerce-simple-registration/woocommerce-simple-registration.php on line 159
class="blog logged-in admin-bar no-customize-support tgmpa single-listing-style-side single-resume-style-side wp-job-manager-categories-enabled wp-job-manager wp-job-manager-resumes wp-job-manager-wc-paid-listings wp-job-manager-bookmarks wp-job-manager-tags wp-job-manager-application-deadline wp-job-manager-applications ninjaforms-contact-resume-form wp-job-manager-contact-listing ninjaforms-contact-job-form woocommerce testimonials geo-my-wp custom-font fixed-header jobify-child">