rstudio - 每次启动 Desktop Rstudio 时，都会收到错误消息 :rstudio error yaml. load readlin con errorlevel errorlevel

Question

登录Desktop Rstudio后，会出现以下消息:

Error in yaml.load(readLines(con), error.label = error.label, ...) : 
  object 'C_unserialize_from_yaml' not found
Error in yaml.load(readLines(con), error.label = error.label, ...) : 
  object 'C_unserialize_from_yaml' not found
Error in yaml.load(readLines(con), error.label = error.label, ...) : 
  object 'C_unserialize_from_yaml' not found
Error in yaml.load(readLines(con), error.label = error.label, ...) : 
  object 'C_unserialize_from_yaml' not found
Error in yaml.load(readLines(con), error.label = error.label, ...) : 
  object 'C_unserialize_from_yaml' not found
and I try to reinstall R and Rstudio with the newest program,it still appear error again.
when I start R program ,it can work with no error. Only Rstudio, and I try to rename the directory"C:\Users\Administrator\AppData\Local\RStudio-Desktop" in another name, Let it create when Rstudio launch,the error message again. 
And I can't knit some Rmd file working normal, it will appear following error:
Error in yaml::yaml.load(string, ...) : 
  找不到对象'C_unserialize_from_yaml'
Calls: <Anonymous> ... parse_yaml_front_matter -> yaml_load_utf8 -> <Anonymous>
停止执行

谁能帮我解决这个问题。非常感谢。

Answer 1

我恢复到 yaml R 包版本 2.1.14，它为我修复了它。 https://cran.r-project.org/src/contrib/Archive/yaml/

使用此 R 命令从源安装软件包(前提是将工作目录设置为 R 软件包所在的位置):install.packages("yaml_2.1.14.tar.gz", repos = NULL)