Likert Plot: Adding "N" across Likert Variables

General
1 
library(sjPlot)
require(HH)
plot(likert(Ngbrhd_Char1[,3:17]), ordered = T, wrap= 60,values = "sum.outside")

I have tried using sum.outside to generate the "Ns" associated with each variable but failed to execute. Kindly assist with this.

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2

I hope this helps:
https://stackoverflow.com/questions/46850866/displaying-percentage-per-category-in-likert-stacked-proportion-barplots

https://stackoverflow.com/questions/37761096/likert-plot-showing-percentage-values

Instead of percentages you can use N.