Error in grid.Call[...]: polygon edge not found

[Deusu]

Hi, I'm trying to compile the book with bookdown::render_book("_bookdown_final.yml").

It stops at line 177 of _main.Rmd with this error:

Quitting from lines 177-217 (_main.Rmd)
Error in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y, :
polygon edge not found

I also receive several warnings in grid.Call.graphics, stating that it cannot find the "Myriad Pro" font.

The code chunk at line 177 builds the "basic-scales-example" plots.

What am I missing?

Thanks a lot!