error in repress code if using demo data in French

[sebdalgarno]

not using the demo data with French names

library(ssdtools)
library(ggplot2)
library(dplyr)

data <- ssddata::ccme_boron
colnames(data) <- make.names(colnames(data))

dist <- ssd_fit_dists(data, left = 'Conc', dists = c('gamma', 'lgumbel', 'llogis', 'lnorm', 'lnorm_lnorm', 'weibull'), silent = TRUE, reweight = FALSE, rescale = FALSE)
ssd_plot_cdf(dist, ylab = 'Pourcentage d’espèces affectées', xlab = 'Concentration', delta = Inf,
average = NA, theme_classic = TRUE, text_size = 14)

ssd_gof(dist) %>% dplyr::mutate_if(is.numeric, ~ signif(., 3))

ggsave('fit_dist_plot.png', width = 8 , height = 6 , dpi = 300)

pred <- predict(dist, proportion = unique(c(1:99, 5.63)/100))
ssd_plot(data, pred, left = 'Conc', label = 'Espèce', shape = NULL, color = 'Groupe',
label_size = 4, ylab = 'Pourcentage d’espèces affecté', xlab = 'Concentration', ci = FALSE, shift_x = 1.05, hc = 0.0563,
big.mark = ' ', trans = 'log10', xlimits = c(NA, 2000), xbreaks = c(1, 10, 100, 1000), text_size = 14, theme_classic = TRUE) +
ggtitle('hi') +
scale_color_brewer(palette = 'Dark2', name = 'Groupe') +
scale_shape(name = NULL)