remove 'validation' err type
remove 'validation' err type

kartotherian/kartotherian,nyurik/tilelive-vector,mapbox/tilelive-vector,kartotherian/kartotherian,nyurik/kartotherian,kartotherian/kartotherian,nyurik/kartotherian,nyurik/kartotherian,jaredbrookswhite/tilelive-vector,kartotherian/kartotherian,nyurik/kartotherian