su: ignoring --preserve-environment, it's mutually exclusive with --login
Loading required package: shinyBS
Loading required package: htmltools
Error in yaml.load(readLines(con, warn = readLines.warn), error.label = error.label,  : 
  (config.yaml) Scanner error: mapping values are not allowed in this context at line 5, column 17
Calls: runApp ... eval -> ..stacktraceon.. -> yaml.load_file -> yaml.load
Execution halted