I have a problem regarding the lmer and glmer functions in Rstudio. An error appears when I use the functions:
Error in initializePtr() :
function 'cholmod_factor_ldetA' not provided by package 'Matrix'
When I use install.packages(“Matrix”) a pop-up appears that keeps telling me to restart R but does nothing. I have installed the newest R and Rstudio versions as wel as the Rtools.
Could anyone help me?