Type check for key in format_title
Type check for key in format_title

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