RowGroup 1.1.0 "ReferenceError: that is not defined" when dataSrc is null

I recently upgraded to RowGroup 1.1.0.

Now when I show a table with null data in the dataSrc column, the console shows an error "ReferenceError: that is not defined" and the "processing" portion continues to show.

Here's my page:
https://ghsfha.org/w/Special:SeasonHome?view=regions&season=2018&org=GHSA&class=A

Notice that three regions (1-A, 2-A, and 5-A) do not have sub regions (the dataSrc is null for those three) and those are the three that are generating the three "that is not defined" reference errors.

Also notice that the actual placement of the "processing" indicator is a little misleading since it appears on top of the "Playoffs" tables, but I've verified it is indeed the region standings tables that generate the reference error.