Error in plotting, Lines #594,693,739 in Rmd

[EllenY]

For example,
#Line 693

p_hind_3 <- plot_stations_basemap(sfIN = mn_var_sf,
fillIN = "mnval",
colorIN = "mnval",
sizeIN=.3) +
facet_grid(simulation~time_period)+
scale_color_viridis_c()+
scale_fill_viridis_c()+
guides(
color = guide_legend(title="Bottom T (degC)"),
fill = guide_legend(title="Bottom T (degC)")) +
ggtitle(lab_t)

Error in st_transform(bering_sf, crs = crs_bering) : object 'bering_sf' not found