...in `block in ffi_lib': Could not open library 'C:/Dev/Ruby27-x64/lib/ruby/gems/2.7.0/gems/plane
tscale-0.2.1/proxy/planetscale-mingw32.so': The specified module could not be found.
The gem contains the following in /planetscale-0.2.1/proxy/
plantscale-darwin.h
plantscale-darwin.so
plantscale-linux.h
plantscale-linux.so