Cannot view any man page: gunzip uncompress failed with every input to cppman

[LostInCompilation]

I installed cppman using homebrew on macOS. When trying to view any man page like cppman vector or cppman std::vector the following error is generated:

cppman std::vector
gunzip: error writing to output: Broken pipe
gunzip: /Users/marc/.cache/cppman/cppreference.com/std::vector.3.gz: uncompress failed

The error seems to happen with every input I give to cppman. Manually decompressing the .gz file works fine.
When looking for the file there seems to be a naming issue. The downloaded file is called std//vector.3.gz: