Adding Labels from a Matrix to a Graph

I am working with the R programming language.

I have the following graph network :

library(tidyverse)
library(visNetwork)
library(htmlwidgets)


set.seed(123)
mat <- matrix(runif(19*20), nrow = 19, ncol = 20)
mat <- t(apply(mat, 1, function(x) x/sum(x)))
mat <- rbind(mat, c(rep(0, 19), 1))


nodes <- data.frame(id = 1:20)
edges <- data.frame(from = sample(1:20, 100, replace = TRUE), to = sample(1:20, 100, replace = TRUE))

nodes$shape <- 'circle'
edges$weight <- apply(edges, 1, function(x) mat[x["from"], x["to"]])

nodes$shape <- 'circle'


# create the network graph
network <- visNetwork(nodes, edges) %>%
  visEdges(arrows = list(to = list(enabled = TRUE))) %>%
  visIgraphLayout(layout = "layout_in_circle") 
network

My Question Now, I want to add "edge labels" to this network (based on the weight column):

  from to      weight
1    6 11 0.061566284
2   10 12 0.078716949
3   10  8 0.001003639
4    6 18 0.044656020
5   16  5 0.061479305
6   16 18 0.060615245

I found this link here and have been trying to adapt the code from here to add the labels : Edges

But I am having trouble doing this - I tried the following code but no labels appear:

network <- visNetwork(nodes, edges) %>%
    visEdges(arrows = list(to = list(enabled = TRUE)), label = list(enabled = TRUE)) %>%
    visIgraphLayout(layout = "layout_in_circle") 
network

Can someone please show me how to fix this?

Thanks!