R: not able to find elements in html using rvest, or V8

I want to download, as a table, the text in the main table of the following website:

https://seia.sea.gob.cl/expediente/expedientesEvaluacion.php?modo=ficha&id_expediente=7673283

The table seems to be dynamically generated, as suggested by an answer to this—practically equivalent— question. But trying to adapt the code, I haven’t been able to get what I need.

I have not tried Selenium, because it asks me to install Java, but I don’t have administrator permits on the computer I am using.

I tried using v8 following the answer to the question linked above, but, when running

ctx$eval(JS(js))

I get:

Error: ReferenceError: UbicaciĆ³nPlazos is not defined

I have no clue how to debug.

Perhaps this specific application will help others (and myself)