fix error message
fix error message

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