ERROR: Single chart was invoked without enough information. is a mandatory field for this chart.
Template:Single chart/missing parameter is a subtemplate to implement missing parameter checks for Template:Single chart and simplify the template code.
ERROR: Single chart was invoked without enough information. is a mandatory field for this chart.
Template:Single chart/missing parameter is a subtemplate to implement missing parameter checks for Template:Single chart and simplify the template code.