Occasionally some fields placed with data from other nodes in notion fields will result in empty values. When this happens an error is thrown. E.g., if you are inputting data into an email field and usually an email address is supplied (works fine) if an email address is not supplied then a 400 error is thrown.
Is there anything that you can do to the expression input to prevent this (i.e. notion recognises a null value instead of wanting something to be defined)?