Learnr Quiz does't show, simply blank line in R Studio cloud

I created a learnr tutorial in my desktop.
Tried to copy/paste in my RStudio Cloud .
Quiz does't show, simply blank line.
Am I missing something.
Thanks for help
U

Can you just put that up here so that I can see? 9apps

quiz(
  question("Which package contains functions for installing other R packages?",
    answer("base"),
    answer("tools"),
    answer("utils", correct = TRUE),
    answer("codetools")
  ),
  question("Which of the R packages listed below are used to create plots?",
    answer("lattice", correct = TRUE),
    answer("tools"),
    answer("stats"),
    answer("grid", correct = TRUE)
  )
)

When I run the R chunk or Run the whole document
i get in the console
Quiz: "Quiz"

Question: "Which package contains functions for installing other R packages?"
type: "learnr_radio"
allow_retry: FALSE
random_answer_order: FALSE
answers:
X: "base"
X: "tools"
:heavy_check_mark:: "utils"
X: "codetools"
messages:
correct: "Correct!"
incorrect: "Incorrect"

Question: "Which of the R packages listed below are used to create plots?"
type: "learnr_checkbox"
allow_retry: FALSE
random_answer_order: FALSE
answers:
:heavy_check_mark:: "lattice"
X: "tools"
X: "stats"
:heavy_check_mark:: "grid"
messages:
correct: "Correct!"
incorrect: "Incorrect"

Thanks

When I run this quiz in RStudio cloud , bring blank line. Whereas the code runs in my desktop . Am i missing somewhere . This is my first project in RStudio .

quiz(
  question("Which package contains functions for installing other R packages?",
    answer("base"),
    answer("tools"),
    answer("utils", correct = TRUE),
    answer("codetools")
  ),
  question("Which of the R packages listed below are used to create plots?",
    answer("lattice", correct = TRUE),
    answer("tools"),
    answer("stats"),
    answer("grid", correct = TRUE)
  )
)

Any help would be appreciated .
Thanks

I could figure it out . Thanks