InvalidArgumentException

Hello
Webpage is reporting following error when trying to access site.
InvalidArgumentException: Field is unknown. in Drupal\Core\Entity\ContentEntityBase->getTranslatedField() (line 509 of /home/vf015200/www_root/core/lib/Drupal/Core/Entity/ContentEntityBase.php).
Issue ocurred for the first time after update to Drupal 8.3
Site is currently not accessible
OS Windows
Browser: Firefox, IE, Chrome

Thank you in advance for help