Twitmo: Unauthorized (HTTP 401)

[agallell]

Unfortunately it seems there are problems related to the authentication.
After running the get_tweets function I get the following error:

"Requesting token on behalf of user...
Error in twitter_init_oauth1.0(self$endpoint, self$app, permission = self$params$permission, :
Unauthorized (HTTP 401)."

In the tutorial you write "Make sure you have a regular Twitter Account before start to sample your tweets." But in the script there it is nowhere indicated how to authenticate.
Some other tutorial suggest to insert Twitter consumer key and secret using setup_twitter_oauth function, but it seems to be under a package which is no longer available.

Can you please provide guidance on how to solve the issue?
Here below the simple script I am trying to run. After that I get the error.
Thanks!

install remotes package if it's not already

if (!requireNamespace("devtools", quietly = TRUE)) {
install.packages("devtools")
}

devtools::install_version("rtweet", version = "0.7.0", repos = "http://cran.us.r-project.org")

install remotes package if it's not already

if (!requireNamespace("remotes", quietly = TRUE)) {
install.packages("remotes")
}

install dev version of Twitmo from github

remotes::install_github("abuchmueller/Twitmo")
library(Twitmo)

get_tweets(method = 'stream',
location = "GBR",
timeout = 30,
file_name = "uk_tweets.json")