Error in .lnglat(data, uma[i], model, paleolng, paleolat) : could not find function ".lnglat"

[Luci-netizen]

I modified the paleocoords function from model="SETON2012" to "MULLER2019".

Since then, I am getting the error "Error in .lnglat(data, uma[i], model, paleolng, paleolat) :
could not find function ".lnglat""

after running:

df_coords_MULLER2019 <- paleocoords(data = df, time = "timevector", timevector = c(1.29, 12.80, 44.51, 105.50, 173.15), model = "MULLER2019")