R语言部分包之前能加载，现在加载不了

Question

求大神解决。

例如

>library(readxl)

错误: package or namespace load failed for ‘readxl’ in dyn.load(file, DLLpath = DLLpath, ...):  无法载入共享目标对象‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so’：:   dlopen(/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so, 6): Symbol not found: _EXTPTR_PTR   Referenced from: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so   Expected in: /Library/Frameworks/R.framework/Resources/lib/libR.dylib  in /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so

还有

> library(reshape2)

错误: package or namespace load failed for ‘reshape2’ in dyn.load(file, DLLpath = DLLpath, ...):  无法载入共享目标对象‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so’：:   dlopen(/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so, 6): Symbol not found: _EXTPTR_PTR   Referenced from: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so   Expected in: /Library/Frameworks/R.framework/Resources/lib/libR.dylib  in /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so 此外: Warning message: 程辑包‘reshape2’是用R版本4.0.2 来建造的

问题的出现是在运行了一下代码，

install.packages("BiocManager")

BiocManager::install("ggtree")

中间出现2次提示（具体记录找不到了），我都选择了all/yes, 后面发现没有安装上去，然后出现了以上问题。

Answer 1

在R 终端中运行以下行 

1. update.packages(ask=FALSE,

2. checkBuilt=TRUE,

3. repos="https://cloud.r-project.org")

然后

1. install.packages(c("Rcpp", "caret", "forecast", "ggplot2", "quadprog"),

2. dependencies=TRUE,

3. repos="https://cloud.r-project.org")