【发布时间】：2020-09-10 01:10:29
【问题描述】：
我目前正在通过 swirl 包练习 R 编程。我被困在其中一门课程的安装步骤中，出现以下错误。
| This lesson requires the ‘dplyr’ package. Would you like me to install it for
| you now?
1: Yes
2: No
Selection: 1
| Trying to install package ‘dplyr’ now...
package ‘dplyr’ successfully unpacked and MD5 sums checked
| Could not install package ‘dplyr’!
|
| | 0%Error in seq.default(0, 1, length.out = nrow(e$les)) :
argument 'length.out' must be of length 1
| Leaving swirl now. Type swirl() to resume.
即使我尝试手动安装它并成功，由于以下错误，我无法加载它。
> library(dplyr)
Error: package or namespace load failed for ‘dplyr’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
namespace ‘rlang’ 0.4.5 is already loaded, but >= 0.4.6 is required
我已尝试删除、重新安装和更新软件包。似乎没有任何效果。请帮忙
【问题讨论】：
标签： r error-handling dplyr package loading