Orders error on Vendor’s Dashboard

Hi WCFM developers,
I am using WordPress5.2.2, WooCommerce3.7, WCFM 6.2.9, WCFM Ultimate 6.2.8 for now.
But I have one error on Orders detail of Vendor’s dashboard.
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2019-09-03T01:13:09+00:00 CRITICAL Uncaught Error: Call to a member function date_i18n() on null in /home/richar24/public_html/wp-content/plugins/wc-frontend-manager/controllers/orders/wcfm-controller-wcfmmarketplace-orders.php:408
Stack trace:
#0 /home/richar24/public_html/wp-content/plugins/wc-frontend-manager/controllers/orders/wcfm-controller-wcfmmarketplace-orders.php(32): WCFM_Orders_WCFMMarketplace_Controller->processing()
#1 /home/richar24/public_html/wp-content/plugins/wc-frontend-manager/core/class-wcfm-ajax.php(180): WCFM_Orders_WCFMMarketplace_Controller->__construct()
#2 /home/richar24/public_html/wp-includes/class-wp-hook.php(286): WCFM_Ajax->wcfm_ajax_controller(”)
#3 /home/richar24/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array)
#4 /home/richar24/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#5 /home/richar24/public_html/wp-admin/admin-ajax.php(173): do_action(‘wp_ajax_wcfm_aj…’)
#6 {main}
thrown in /home/richar24/public_html/wp-content/plugins/wc-frontend-manager/controllers/orders/wcfm-controller-wcfmmarketplace-orders.php on line 408
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It’s working well on admin’s dashboard.
But It’s not working only on vendor’s dashboard.
Looking forward to your kindly reply.
Thanks,

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