Office.context.mailbox.item->没有数据，对于Outlook Desktop客户端为null。在OWA中工作

Question

在加载所有内容后，单击按钮即可调用刷新功能。

错误是： js错误类型错误，无法获取未定义或空引用的属性“ internetMessageId”

更多信息并链接到github问题页面：https://github.com/OfficeDev/office-js/issues/1402

tib1 <- tib1 %>% 
    mutate(soiltype = ordered(soiltype, c("clay", "gravel", "sand", "loam")))

colpalette = c("darkseagreen3", "darkgrey","palegoldenrod","#FF9966")

ggplot(tib1,
       aes(x = drill))+
    geom_bar(aes(fill = soiltype, y = -thickness),
             stat = "identity")+
    scale_fill_manual(values = colpalette)+
    facet_wrap(vars(location), scale = "free_x")+
    xlab("drill")+
    ylab("depth (cm)")+
    ggtitle("how to plot the bars in the 'preferred order'? ",
            subtitle = "the order of loc2 and drill == 4 should be: loam-sand-gravel-clay")+
    theme_minimal()