角度* ngFor devmode TypeError：a [getSymbolIterator（...）]

Question

我使用的是角度6.1.7，当我在调试模式下将dfm<- melt(Data1Chamber[, c("genotype", "NovelMouseChamberCum","CChamberCum", "NovelObjectChamberCum")], id.vars= 1) 与数组一起使用时，仍然会遇到此错误：

ggplot(dfm,aes(x = genotype, y = value)) + 
  geom_bar(aes(fill = variable),stat = "identity",position = "dodge")

我的html很简单：

*ngFor

国家为AddressEditComponent.html:36 ERROR TypeError: a[getSymbolIterator(...)] is not a function at areIterablesEqual (core.js:5492) at devModeEqual (core.js:5421) at checkBindingNoChanges (core.js:7689) at checkNoChangesNodeInline (core.js:10552) at checkNoChangesNode (core.js:10541) at debugCheckNoChangesNode (core.js:11144) at debugCheckDirectivesFn (core.js:11072) at Object.eval [as updateDirectives] (AddressEditComponent.html:37) at Object.debugUpdateDirectives [as updateDirectives] (core.js:11061) at checkNoChangesView (core.js:10440)

由于我使用了<select name="country" class="form-control" [(ngModel)]="address.country" > <option value="">- Pays -</option> <option *ngFor="let country of countries" value={{country}}> {{country}} </option> </select>

，该产品已停止生产

任何解决方案吗？

我做错什么了吗？

Answer 1

在更新到最新版本的angular时已解决