Recent errors from Control Center - cant update a cell


I've browsed through other posts and found similar info and solutions to look into, but wanted to see if this was unique, or result of a recent change on Smartsheet end.

Our template has been in place for a few years now. No changes to the cells now throwing errors, and no changes to the sheets that should impact these cells.

Prior to 12/13/2023, no errors were reported. Starting on 12/13/2023, received the following error after a project was provisioned:

The cell it is referencing has always had a formula to another sheet.

Recently the error has changed to the following:

Everything seems fine in the new sheets, and as mentioned, the formulas were always there.

Is this something that has always been there, but is just now being reported?