Improved exception in Columns when selecting missing value dimension
Improved exception in Columns when selecting missing value dimension

basnijholt/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews,basnijholt/holoviews,vascotenner/holoviews,vascotenner/holoviews,ioam/holoviews,ioam/holoviews