su: ignore --preserve-environment, it's mutually exclusive to --login.


processing file: prepare_data_app_rmd.rmd
Warning in file(con, "w") :
  cannot open file 'prepare_data_app_rmd.knit.md': Permission denied
Error in file(con, "w") : cannot open the connection
Calls: runApp ... <Anonymous> -> <Anonymous> -> write_utf8 -> writeLines -> file
Execution halted