Sidebar content gone after Wp/Woo/Genesis update

Hi
My carefully crafted sidebar is suddenly blank.

All content is just gone. ??

This was when WP 4.5 updates, woo-updates, Genesis update.

Any idea what could have happen?

Best regards,
Fredrik

Error message at the same time from this plugin with presence in that sidebar:

Warning: include(/home/u/u7989098/www/valid1.u7989098.fsdata.se/wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/templates/panel/sidebar/widgets/widgets.php): failed to open stream: No such file or directory in /home/u/u7989098/www/valid1.u7989098.fsdata.se/wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/lib/yit-plugin-panel-sidebar.php on line 268

Warning: include(): Failed opening ‘/home/u/u7989098/www/valid1.u7989098.fsdata.se/wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/templates/panel/sidebar/widgets/widgets.php’ for inclusion (include_path=’./:/usr/local/lib/php’) in /home/u/u7989098/www/valid1.u7989098.fsdata.se/wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/lib/yit-plugin-panel-sidebar.php on line 268

Warning: array_merge(): Argument #1 is not an array in /home/u/u7989098/www/valid1.u7989098.fsdata.se/wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/lib/yit-plugin-panel-sidebar.php on line 135

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https://www.ads-software.com/plugins/genesis-simple-sidebars/