Shiny App Crash

[bourbaki]

Shiny App crashes creating ODBC connection using vODBC:

library(vertica.dplyr)

vrt <- src_vertica(
  dsn = 'VerticaDSN'
)

shinyServer(function(input, output) {

  output$distPlot <- renderPlot({

    # generate bins based on input$bins from ui.R
    x    <- faithful[, 2]
    bins <- seq(min(x), max(x), length.out = input$bins + 1)

    # draw the histogram with the specified number of bins
    hist(x, breaks = bins, col = 'darkgray', border = 'white')

  })

})

I have discovered that problem is at odbcConnect call. The interesting thing is if I execute odbcConnect in a console before launching my shiny app everything is OK.