r - 异常化r包错误

Question

我想测试 Anomalize r 包的异常检测问题。检查github 页面后，我尝试了他们提供的示例代码：

library(anomalize)

tidyverse_cran_downloads %>%
# Data Manipulation / Anomaly Detection
    time_decompose(count, method = "stl") %>%
    anomalize(remainder, method = "iqr") %>%
    time_recompose() %>%
# Anomaly Visualization
    plot_anomalies(time_recomposed = TRUE, ncol = 3, alpha_dots = 0.25) +
    labs(title = "Tidyverse Anomalies", subtitle = "STL + IQR Methods")

但是，我收到以下错误：

Error in mutate_impl(.data, dots) : 
'arg' should be one of “second”, “minute”, “hour”, “day”, “week”, 
“month”, “year”

我无法调试。任何人都可以帮忙吗？如果有用，我使用的是 R 版本 3.4.3。

干杯!