rmultilevel-analysis

Interactions and Rlang: Error: ! `class` must be a character vector, not a list

So, I keep getting an error when trying to plot Johnson-neyman plots with the sim_slopes function of the Interactions package.

library(interactions)
m <- lm(mpg ~ hp * wt, data = mtcars)
sim_slopes(m, pred = hp, modx = wt, jnplot = TRUE)

error:

Error:
! `class` must be a character vector, not a list.
Backtrace:
 1. interactions::sim_slopes(m, pred = hp, modx = wt, jnplot = TRUE)
 3. jtools:::summ.lm(...)
 4. jtools:::do_robust(model, robust, cluster, data, vcov)
 5. jtools::get_robust_se(...)
 6. jtools::stop_wrap(...)
 8. rlang (local) `<fn>`(class = <named list>)

Packages versions:

packageVersion('rlang')# [1] ‘1.0.6’ 
packageVersion('interactions') # ‘1.1.5' .

I tested a few alternatives (RStudio cloud and friends' computers) and it seems like it's a problem with my R. I suspect it's something related to rlang but cannot fix it (already tried a few things, no success).

Any ideas on how to fix that or what may be causing it?

Thanks in advance!

Solution

  • Well, I figured it out.

    After reinstalling and updating all the dependencies for both jtools and rlang, the code started to run normally.

    I don't know exactly where things started to work, but it seems to have been an issue with the many packages related to either jtools or rlang