I have a problem with the "ShinyDash" installations

[gibranbarrera]

R Studio send me this message, please, helpme

Loading required package: RSpectra
Error in library(ShinyDash) : there is no package called ‘ShinyDash’
Además: Warning message:
Error in library(ShinyDash) : there is no package called ‘ShinyDash’ > install.packages("shiny")
WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:

https://cran.rstudio.com/bin/windows/Rtools/
Warning in install.packages :
package ‘shiny’ is in use and will not be installed