[R] using win task to run Rscript somepackages can't work in script mode

[PO SU]

Dear expeRts,
     These days i want to run a .R file contained a package called gmailr to do something about processing gmail , it works well in 
interactive
 GUI  ,that is ,Rstudio. But i want to run it by a windows task, so i need to run the .R file in Rscript mode, sadly, there seems different between the two ways, the gmailr package fails work in the script mode.
    So, what the difference? why Rscript can't run some codes which works well in Rstudio? How can i do something to make it suceess if there is some options to set ?
    




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PO SU
mail: desolator88 at 163.com 
Majored in Statistics from SJTU