Installation failed: Command failed (1)

[Faisak]

devtools::install_github("muschellij2/rscopus") x <- generic_elsevier_api( query = "ISSN(0004-3702) AND YEAR(2001)", search_type = "scopus") x$content$search-results$opensearch:totalResults

error:

• installing source package 'rscopus' ... R tests ** byte-compile and prepare package for lazy loading Error in library(rvest) : there is no package called 'rvest' Error : unable to load R code in package 'rscopus' ERROR: lazy loading failed for package 'rscopus'
• removing 'C:/Users/Myname/Documents/R/win-library/3.5/rscopus'
• restoring previous 'C:/Users/Myname/Documents/R/win-library/3.5/rscopus' In R CMD INSTALL Installation failed: Command failed (1)

[muschellij2]

Again, please post a MCVE: https://stackoverflow.com/help/mcve version of R, version of devtools, operating system.

Error in library(rvest) : there is no package called 'rvest'

Install rvest:

install.packages("rvest")