Can not use my custom font with plotly

I am trying to use a custom font with plotly but it does not work althoug it does work with ggplot. Is there a way to solve this?
You can download the font here: https://freefontsfamily.com/proxima-nova-font-family-free-download/

This is the ggplot example that does work:

library(dplyr)
library(ggplot2)
library(plotly)
library(showtext)
font.add("Proxima Nova", "ProximaNova.otf")


df <- data.frame(x = c(1,2,3), y = c(2,3,4))

my_theme_ggplot <-
    ggplot2::theme_bw() +
    ggplot2::theme(
      plot.title = element_text(hjust = 0.5),
      text=element_text(size=16,  family="Proxima Nova")
      )

p <- df %>% ggplot(aes(x = x, y = y)) + 
  geom_line() +
  ggtitle("Title", ) +
  labs(y= "Date", x = "Y Data") +
  my_theme_ggplot

p

This is the plotly example that does not work

df <- data.frame(x = c(1,2,3), y = c(2,3,4))
t <- list(
  family = "Proxima Nova",
  size = 14)

p <- df %>% ggplot(aes(x = x, y = y)) + 
  geom_line() +
  ggtitle("Title", ) +
  labs(y= "Date", x = "Y Data") 

ggplotly(p) %>% layout(font=t)

Reproduisez la différence signalée entre la configuration showtext/font.add dans ggplot et l’exemple ggplotly(p) %>% layout(font=t). Commencez par les points d’entrée ggplotly et layout(font=t), puis examinez comment la famille personnalisée est transmise au graphique rendu. Le travail est terminé lorsque la police Proxima Nova est rendue dans la sortie Plotly, avec une vérification de régression pour l’exemple si le projet dispose d’un emplacement de test approprié.