I am using the "betareg" package with R version 4.1.0. I was able to create a beta regression model, mod, but other betareg functions do not work (residuals.betareg, cooks.distance.betareg, plot.betareg, etc.). When I look at the package on my machine I can see these functions, and their documentation, but when I use them I get an error:
betareg::residuals.betareg(mod)
Error: 'residuals.betareg' is not an exported object from 'namespace:betareg'
residuals.betareg(mod)
Error in residuals.betareg(mod) :
could not find function "residuals.betareg"