@@ -556,7 +556,7 @@ function getBarSeries(fontSize, layout, series, barconfig) {
function getLineSeries(fontSize, series, lineconfig) {
let s = [],
- areaStyleCfg = lineconfig.areaStyle;
+ areaStyleCfg = lineconfig.areaStyle || '{}';
areaStyleCfg = JSON.parse(areaStyleCfg);