theme_void() breaks ggarrange2()

[willgearty]

This works:

p1 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point()
p2 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point() +
  facet_wrap(~cyl, ncol = 2, scales = "free") +
  guides(colour = "none") +
  theme()
ggarrange2(p1, p2, widths = c(2, 1), labels = c("a", "b"))

but this doesn't:

p1 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point() + theme_void()
p2 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point() +
  facet_wrap(~cyl, ncol = 2, scales = "free") +
  guides(colour = "none") +
  theme()
ggarrange2(p1, p2, widths = c(2, 1), labels = c("a", "b"))

throwing this error:

Error in unit(widths, default.units) : 
  'x' and 'units' must have length > 0