I’m trying to animate a shapefile using gganimate, but when I run, nothing happens and R crashes. I’ve attached the code below, not sure what to do? Thanks.

ca_counties <- read_sf("California_County_Boundaries_5206538824092848308.geojson")

plot(st_geometry(ca_counties))

wnv_cases <- read_csv("wnv_ca.csv")

joined <- st_as_sf(full_join(wnv_cases, ca_counties, by = c("County" = "COUNTY_NAME")))
#joined


test_map <- ggplot() + geom_sf(data=joined %>% slice(1:150), 
                   aes(fill=Cases)) +
  theme_void()

test_animation <- test_map + transition_time(as.numeric(Year))
animate(test_animation)

Ran the animate command, expecting the plot to become animated in the plot pane, but R couldn’t complete it and I had to restart R to get it to stop running, and no plot showed up at all.