su: ignoring --preserve-environment, it's mutually exclusive with --login
Warning in gzfile(file, "rb") :
  cannot open compressed file '/pval.rds', probable reason 'No such file or directory'
Error in gzfile(file, "rb") : cannot open the connection
Calls: runApp ... ..stacktraceon.. -> %>% -> as.data.frame -> readRDS -> gzfile
Execution halted