class TZInfo::DataSources::ZoneinfoDirectoryNotFound

a time zone index file named zone1970.tab or zone.tab.
contains time zone files, a country code index file named iso3166.tab and
{ZoneinfoDataSource.search_path}. A valid zoneinfo directory is one that
directory could be found when checking the paths listed in
A {ZoneinfoDirectoryNotFound} exception is raised if no valid zoneinfo