Unable to see error logs under directory specified for logs

[Royal India]

Unable to see this error log under the logs directory. Is there anything I am  missing here ?
Listening on http://127.0.0.1:7517
Warning: Error in $.shinyoutput: Reading from shinyoutput object is not allowed.
  50: stop
  49: $.shinyoutput
  47: server [/Users/sarvani/abc_def.R#41]
Error in `$.shinyoutput`(output, abc) :
  Reading from shinyoutput object is not allowed.

Reprex:

library(shiny)
library(shinylogs)

ui <- fluidPage(
  headerPanel("Iris k-means clustering"),
  sidebarLayout(
    sidebarPanel(
      selectInput(
        inputId = "xcol",
        label = "X Variable",
        choices = names(iris)
      ),
      selectInput(
        inputId = "ycol",
        label = "Y Variable",
        choices = names(iris),
        selected = names(iris)[[2]]
      ),
      numericInput(
        inputId = "clusters",
        label = "Cluster count",
        value = 3,
        min = 1,
        max = 9
      )
    ),
    mainPanel(
      plotOutput("plot1")
    )
  )
)

server <- function(input, output, session) {
  # Store JSON with logs in the temp dir
  track_usage(
    storage_mode = store_json(path = "logs/"),what = c("session", "error")
  )
  output$abc
  # classic server logic
  selectedData <- reactive({
    iris[, c(input$xcol, input$ycol)]
  })
  clusters <- reactive({
    kmeans(selectedData(), input$clusters)
  })
  output$plot1 <- renderPlot({
    palette(c(
      "#E41A1C", "#377EB8", "#4DAF4A", "#984EA3",
      "#FF7F00", "#FFFF33", "#A65628", "#F781BF", "#999999"
    ))
   
    par(mar = c(5.1, 4.1, 0, 1))
    plot(selectedData(),
         col = clusters()$cluster,
         pch = 20, cex = 3
    )
    points(clusters()$centers, pch = 4, cex = 4, lwd = 4)
  })
}

shinyApp(ui = ui, server = server)