When reading a file with a slide master but without layouts or slides, read_pptx() throws an error.
Such an empty file is a bit unusual, still the error could be more informative.
File: test-no-layouts.pptx
x <- read_pptx(file)
Error in fix.by(by.x, x) : 'by' must specify valid column
When reading a file with a slide master but without layouts or slides, read_pptx() throws an error.
Such an empty file is a bit unusual, still the error could be more informative.
File: test-no-layouts.pptx