Front Page Widget Errors since WP update

I have just updated WP and the Himalayas theme plus all plugins.
Although my website looks fine at the front end and seems to still be working ok, the front page widget is displaying a load of error messages and makes some areas now uneditable. I have tried deactivating all plug-ins but the same thing still happens.
Any advice would be appreciated.

Error messages below

The "himalayas_our_team_widget" block was affected by errors and may not function properly. Check the developer tools for more details.

The "text" block was affected by errors and may not function properly. Check the developer tools for more details.

The "himalayas_featured_posts_widget" block was affected by errors and may not function properly. Check the developer tools for more details.

The "himalayas_about_us_widget" block was affected by errors and may not function properly. Check the developer tools for more details.

The "himalayas_contact_widget" block was affected by errors and may not function properly. Check the developer tools for more details.

The "himalayas_call_to_action_widget" block was affected by errors and may not function properly. Check the developer tools for more details.

The "recent-posts" block was affected by errors and may not function properly. Check the developer tools for more details.

The "archives" block was affected by errors and may not function properly. Check the developer tools for more details.

The "media_gallery" block was affected by errors and may not function properly. Check the developer tools for more details.