su: ignore --preserve-environment, it's mutually exclusive to --login.
Registered S3 methods overwritten by 'tibble':
  method     from  
  format.tbl pillar
  print.tbl  pillar

Attaching package: ‘dplyr’

The following objects are masked from ‘package:stats’:

    filter, lag

The following objects are masked from ‘package:base’:

    intersect, setdiff, setequal, union


Attaching package: ‘shinydashboard’

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

    box

Error in library(shinyFeedback) : 
  there is no package called ‘shinyFeedback’
Calls: runApp ... sourceUTF8 -> eval -> eval -> ..stacktraceon.. -> library
Execution halted