Using Shiny (RStudio) library on SAP Analytics Cloud - r

Question

I've developed a perfectly functional app using Shiny package that I would like to run on SAC using its R functionalities; however, and despite Shiny being listed as one of the packages supported by SAC (https://blogs.sap.com/2020/03/18/r-packages-for-sap-analytics-cloud/) my app won't run.
I wish I could give you more details, but the script I run on R and the one I try to run on SAC are one and the same, as well as the mock up data; so it's beyond me why SAP won't let me do it. Am I missing something? Has anyone tried Shiny on SAC before without major issues?
Thanks in advance!
Edit: Here is my code, without needing any input data.
library(ggplot2)
ui <- fluidPage(
titlePanel("Bass Diffusion Model Visualisation"),
sidebarLayout(
sidebarPanel(
h2("Baseline model (blue)"),
sliderInput(
"innovation_base",
"Innovation effect:",
min = 0,
max = 1,
value = 0.03
),
sliderInput(
"imitation_base",
"Imitation effect:",
min = 0,
max = 1,
value = 0.38
),
h2("Challenger model (red)"),
sliderInput(
"innovation",
"Innovation effect:",
min = 0,
max = 1,
value = 0.02
),
sliderInput(
"imitation",
"Imitation effect:",
min = 0,
max = 1,
value = 0.42
)
),
mainPanel(
h2("Rate of adoption"),
plotOutput("adoptionPlot"),
h2("Cumulative adoption"),
plotOutput("cumAdoptionPlot"))
))
server <- function(input, output) {
output$adoptionPlot <- renderPlot({
bass_base <-
difcurve(
n = 20,
w = c(input$innovation_base, input$imitation_base, 100),
type = "bass"
)
bass_challenger <-
difcurve(
n = 20,
w = c(input$innovation, input$imitation, 100),
type = "bass"
)
plot_adoption <- ggplot(as.data.frame(bass_base)) +
aes(y = Adoption, x = 1:nrow(bass_base)) +
geom_line(colour = "blue") +
geom_line(data = as.data.frame(bass_challenger), colour = 'red') +
labs(x = "years")
plot_adoption
})
output$cumAdoptionPlot <- renderPlot({
bass_base <-
difcurve(
n = 20,
w = c(input$innovation_base, input$imitation_base, 100),
type = "bass"
)
bass_challenger <-
difcurve(
n = 20,
w = c(input$innovation, input$imitation, 100),
type = "bass"
)
plot_cumAdoption <- ggplot(as.data.frame(bass_base)) +
aes(y = `Cumulative Adoption`, x = 1:nrow(bass_base)) +
geom_line(colour = "blue") +
geom_line(data = as.data.frame(bass_challenger), colour = 'red') +
labs(x = "years")
plot_cumAdoption
})
}
shinyApp(ui = ui, server = server)
The error I get is: 502 Bad Gateway: Registered endpoint failed to handle the request.