su: ignoring --preserve-environment, it's mutually exclusive with --login
Loading required package: shinyBS
Loading required package: htmltools
Warning in readLines(con, warn = readLines.warn) :
  cannot open file 'comfig.yaml': No such file or directory
Error in readLines(con, warn = readLines.warn) : 
  cannot open the connection
Calls: runApp ... ..stacktraceon.. -> yaml.load_file -> yaml.load -> paste -> readLines
Execution halted