Visual just stopped working...

Hi Folks,

The same PeopleSoft query runs every day and there has not been any change to it. The "Birth Date" field in that query is a Date field. When I opened my Power BI file today to refresh the data, I got this error on a visual:

  I have not made one change to the visual, Power BI file, or PeopleSoft feed in two weeks and this just magically popped up today. 

I have a calculated colum giving me the retirement date which is:

Retirement Date =
SWITCH (
TRUE (),
YEAR ( 'Active EEs'[Birth Date]) >= 1937
&& YEAR ( 'Active EEs'[Birth Date] ) <= 1942,
(
DATE ( ( YEAR ( [Birth Date] ) + 65 ), MONTH ( 'Active EEs'[Birth Date] ), DAY ( 'Active EEs'[Birth Date] ) )
), YEAR ( 'Active EEs'[Birth Date] ) >= 1942
&& YEAR ( 'Active EEs'[Birth Date] ) <= 1959,
(
DATE ( ( YEAR ( [Birth Date] ) + 66 ), MONTH ( 'Active EEs'[Birth Date] ), DAY ( 'Active EEs'[Birth Date] ) )
),
(
DATE ( ( YEAR ( [Birth Date] ) + 67 ), MONTH ( 'Active EEs'[Birth Date] ), DAY ( 'Active EEs'[Birth Date] ) )
)
)

My retirement eligibility calculated column is also messed up because of the above measure. The measure for retirement eligibility is:

Retirement Eligibility = SWITCH ( TRUE (), TODAY () > 'Active EEs'[Retirement Date], "Over retirement", 'Active EEs'[Retirement Date] <= DATE (( YEAR ( TODAY () ) + 3), MONTH ( TODAY () ), DAY ( TODAY () ) ), "Within 3 Years", 'Active EEs'[Retirement Date] <= DATE (( YEAR ( TODAY () ) + 5), MONTH ( TODAY () ), DAY ( TODAY () ) ), "Within 5 Years", "Not Eligible" )

What the heck would make this just stop working? All I do is click "refresh" and publish. 

Any help would be appreciated! Many thanks!!!