su: ignore --preserve-environment, it's mutually exclusive to --login.
Loading required package: ggplot2

Attaching package: ‘cowplot’

The following object is masked from ‘package:ggplot2’:

    ggsave

── Attaching packages ─────────────────────────────────────── tidyverse 1.3.0 ──
✔ tibble  3.0.3     ✔ dplyr   1.0.2
✔ tidyr   1.1.2     ✔ stringr 1.4.0
✔ readr   1.3.1     ✔ forcats 0.5.0
✔ purrr   0.3.4     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter()   masks stats::filter()
✖ cowplot::ggsave() masks ggplot2::ggsave()
✖ dplyr::lag()      masks stats::lag()

Attaching package: ‘shinydashboard’

The following object is masked from ‘package:graphics’:

    box


Listening on http://127.0.0.1:33378
createTcpServer: address already in use
Error in .subset2(public_bind_env, "initialize")(...) : 
  Failed to create server
Calls: runApp ... startApp -> startServer -> <Anonymous> -> <Anonymous>
Execution halted