Running `git heatmap` results in no output and no error

[Tycholiz]

Running through your CR tutorial and running the command git heatmap --width 25 --filter 'grep src | grep "\.js"', as well as just git heatmap by itself. Problem is, when I run these commands, I get blank output: running git-heatmap -help and bars by themselves show the help pages, so I can confirm that both are installed properly.

I am using zsh 5.8 (Darwin), along with node 13.5.0.

[chicken-suop]

Yeah, getting the same