Error(s) in re-building vignettes:
  ...
--- re-building ‘bhav.Rmd’ using rmarkdown
--- finished re-building ‘bhav.Rmd’

--- re-building ‘bhav1.Rmd’ using rmarkdown
--- finished re-building ‘bhav1.Rmd’

--- re-building ‘bhavfos.Rmd’ using rmarkdown
--- finished re-building ‘bhavfos.Rmd’

--- re-building ‘bhavpr.Rmd’ using rmarkdown
--- finished re-building ‘bhavpr.Rmd’

--- re-building ‘bhavs.Rmd’ using rmarkdown
--- finished re-building ‘bhavs.Rmd’

--- re-building ‘bhavtoday.Rmd’ using rmarkdown
--- finished re-building ‘bhavtoday.Rmd’

--- re-building ‘dailydata.Rmd’ using rmarkdown
--- finished re-building ‘dailydata.Rmd’

--- re-building ‘daytomonth.Rmd’ using rmarkdown
--- finished re-building ‘daytomonth.Rmd’

--- re-building ‘daytoweek.Rmd’ using rmarkdown
--- finished re-building ‘daytoweek.Rmd’

--- re-building ‘fdii.Rmd’ using rmarkdown
--- finished re-building ‘fdii.Rmd’

--- re-building ‘fobhav.Rmd’ using rmarkdown
trying URL 'https://archives.nseindia.com/content/historical/DERIVATIVES/2021/JUL/fo01JUL2021bhav.csv.zip'

Quitting from lines 23-27 [example] (fobhav.Rmd)
Error: processing vignette 'fobhav.Rmd' failed with diagnostics:
cannot open URL 'https://archives.nseindia.com/content/historical/DERIVATIVES/2021/JUL/fo01JUL2021bhav.csv.zip'
--- failed re-building ‘fobhav.Rmd’

--- re-building ‘fobhavtoday.Rmd’ using rmarkdown
--- finished re-building ‘fobhavtoday.Rmd’

--- re-building ‘nseindex.Rmd’ using rmarkdown
--- finished re-building ‘nseindex.Rmd’

--- re-building ‘nseipo.Rmd’ using rmarkdown
--- finished re-building ‘nseipo.Rmd’

--- re-building ‘nselive.Rmd’ using rmarkdown
--- finished re-building ‘nselive.Rmd’

--- re-building ‘nseopen.Rmd’ using rmarkdown
--- finished re-building ‘nseopen.Rmd’

--- re-building ‘nsetree.Rmd’ using rmarkdown
--- finished re-building ‘nsetree.Rmd’

--- re-building ‘optbanknifty.Rmd’ using rmarkdown
--- finished re-building ‘optbanknifty.Rmd’

--- re-building ‘optnifty.Rmd’ using rmarkdown
--- finished re-building ‘optnifty.Rmd’

SUMMARY: processing the following file failed:
  ‘fobhav.Rmd’

Error: Vignette re-building failed.
Execution halted