Hi there!
We are a team that are currently migrating from a 6.4 to a new 7.4 Elastic cluster.
While upgrading our application to use Nest 7.4 we found a breaking change that is not noted in the current documentation: Member Expression only
If a Member Expression is used in the Field constructor in Nest version 7.4, an Exception will be thrown!
The change, that causes this problem can be found here:
Github change
We have found a "workaround" for this, by creating a Lambda Expression from a Member Expression before passing it to the Field constructor.
A suggestion is that you either update the documentation or rollback the change 