[Bioc-devel] Error from rmarkdown

Hi all,

I am the maintainer of anamiR.
I keep getting this error on build report, which I don't get it on my  
local environment. Also, the weird part is that it did not show up  
until this September. Does anyone how to fix this? it looks like  
something went wrong with t.test from stats, and I don't think this  
package has been changed...

Quitting from lines 187-198 (IntroductionToanamiR.Rmd)
Error: processing vignette 'IntroductionToanamiR.Rmd' failed with diagnostics:
not enough 'x' observations
--- failed re-building ?IntroductionToanamiR.Rmd?

Any suggestion would be helpful,
Thank you!

Ti-Tai