The role attribute must not be used on a tr

good morning, rich support for the problem in question. A few days ago I had
solved some validation problems on some files and I had no more errors.
Today, on the same files I get this error. 

 

 

Error: The role attribute must not be used on a tr element which has a table
ancestor with no role attribute, or with a role attribute whose value is
table, grid, or treegrid.

 

Can you tell me what this change is due to? thank you