Error: Invalid input: date_trans works with objects of class Date only

Hello everyone,
p background.

However, after entering the necessary data and information, the error "Error: Invalid input: date_trans works with objects of class Date only"

If you can advise me on the solution of any of the previous points, I appreciate that you let me know because any help is very valuable

The excel file in the link you have provided doesn't have a "R2:S428" range so we can't test your code, please turn this into a self-contained REPRoducible EXample (reprex) illustrating your issue, including sample data on a copy/paste friendly format.

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