I'm using Column charts https://developers.google.com/chart/interactive/docs/gallery/columnchart of Google and it works fine. However, for some data I need horizontal charts. Bar char is suggested https://developers.google.com/chart/interactive/docs/gallery/barchart and I'm using it but this
bars: 'horizontal' // Required for Material Bar Charts.
Doesn't work, namely, a chart is still vertical. Everything else is working fine.
What can be an issue? And what does "// Required for Material Bar Charts." mean?