Error: package or namespace load failed for ‘utils’ in dyn.load(file, DLLpath = DLLpath, ...): unab

在linux下安装R(yum install R)后，运行R出现错误：
Error: package or namespace load failed for ‘utils’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/usr/lib64/R/library/utils/libs/utils.so':
/usr/lib64/R/library/utils/libs/utils.so: undefined symbol: libssh2_exit
Error: package or namespace load failed for ‘grDevices’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/usr/lib64/R/library/grDevices/libs/grDevices.so':
/usr/lib64/R/library/grDevices/libs/grDevices.so: undefined symbol: libssh2_exit
Error: package or namespace load failed for ‘graphics’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/usr/lib64/R/library/grDevices/libs/grDevices.so':
/usr/lib64/R/library/grDevices/libs/grDevices.so: undefined symbol: libssh2_exit
Error: package or namespace load failed for ‘stats’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/usr/lib64/R/library/grDevices/libs/grDevices.so':
/usr/lib64/R/library/grDevices/libs/grDevices.so: undefined symbol: libssh2_exit
Error: package or namespace load failed for ‘methods’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/usr/lib64/R/library/methods/libs/methods.so':
/usr/lib64/R/library/methods/libs/methods.so: undefined symbol: libssh2_exit
在这里找到了解决方法：

升级libssh2