问题 After trying to build a PDF that worked ~2 weeks ago, no fuss, on a new machine with a fresh install of R, R studio, bookdown , etc, I have this error: Error: Input files not all in same directory, please supply explicit wd I have chapters of .Rmd files sorted into directories, and so if I change rmd_subdir from true to false , the error goes away, but... I just can't work with 100+ chapters containing 4-7 each scenes in the root of the project; I'll go insane. I have new_session: no in my