I'm trying to use the newly developed --print-highlight-style option (context: #4106 and #4096) to obtain a theme file and then use it with --highlight-style, but get an error message.

I'm using pandoc 2.0.4 (Compiled with pandoc-types 1.17.3, texmath 0.10, skylighting 0.4.4.1)

pandoc --print-highlight-style pygments > pygments.theme
pandoc pygments.theme --highlight-style pygments.theme -o test.pdf

Output:
Could not read highlighting theme pygments.theme

Expected output:
The pdf rendering of the file pygments.theme using the theme pygments.theme.