RStudio Server - load file.RData Error : invalid multibyte string

Question

I have a file file.RData with one of the data frames containing values with Swedish characters.

When loading file.RData in the Shiny app, it works fine on the local Windows machine, but when I move it to Ubuntu server and run it in RStudio Server: I get Error : invalid multibyte string

I changed Ubuntu's locale to sv_SE.UTF-8, rebooted and I still get the error. I've been looking at other similar problems link1 link2 , but don't know how to adapt it to my particular situation.

Is there any way to make my Shiny app work on Shiny server and keep file.RData with Swedish characters?

Here's a sample of my code in app.R:

library(shiny)
library(ggplot2)
library(lubridate)

(WD <- getwd())
if (!is.null(WD)) setwd(WD)

load ("file.RData")

server<-function(input,output){
.......
}

ui<-fluidPage(
.......
)

shinyApp(ui = ui, server = server)

Answer 1

I managed to convert the columns of the data frames, which had Swedish characters, by adding the following code after loading the file.RData:

load ("file.RData")    

Encoding(df1$TEAM)<-"latin1"
Encoding(df2$TEAM)<-"latin1"
Encoding(df3$Team)<-"latin1"