This run-time message occurs if a minicalendar token contains both a :dte minicalendar modifier and a :ws week start mincalendar modifier.
The combination of these 2 modifiers, within the same minicalendar token makes no sense, as both the :dte and the :ws try to change the baseline date of tokens that are inside a minicalendar, both in a different and contradictory manner.
Topic 177430, last updated on 17-Apr-2020