'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
  ...
--- re-building 'Calculate_WACC_in_R.Rmd' using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette 'Calculate_WACC_in_R.Rmd' failed with diagnostics:
server certificate verification failed. CAfile: none CRLfile: none
--- failed re-building 'Calculate_WACC_in_R.Rmd'

SUMMARY: processing the following file failed:
  'Calculate_WACC_in_R.Rmd'

Error: Vignette re-building failed.
Execution halted
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
  ...
--- re-building ‘Calculate_WACC_in_R.Rmd’ using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette ‘Calculate_WACC_in_R.Rmd’ failed with diagnostics:
server certificate verification failed. CAfile: none CRLfile: none
--- failed re-building ‘Calculate_WACC_in_R.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
--- re-building ‘Calculate_WACC_in_R.Rmd’ using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette 'Calculate_WACC_in_R.Rmd' failed with diagnostics:
SSL certificate problem: unable to get local issuer certificate
--- failed re-building ‘Calculate_WACC_in_R.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
--- re-building ‘Calculate_WACC_in_R.Rmd’ using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette 'Calculate_WACC_in_R.Rmd' failed with diagnostics:
SSL certificate problem: unable to get local issuer certificate
--- failed re-building ‘Calculate_WACC_in_R.Rmd’

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

Error: Vignette re-building failed.
Execution halted
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
  ...
--- re-building ‘Calculate_WACC_in_R.Rmd’ using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette ‘Calculate_WACC_in_R.Rmd’ failed with diagnostics:
server certificate verification failed. CAfile: none CRLfile: none
--- failed re-building ‘Calculate_WACC_in_R.Rmd’

SUMMARY: processing the following file failed:
Warning in for (i in seq_along(specs)) { :
  closing unused connection 4 (http://people.stern.nyu.edu/adamodar/New_Home_Page/datafile/wacc.htm)
  ‘Calculate_WACC_in_R.Rmd’

Error: Vignette re-building failed.
Execution halted
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
  ...
--- re-building ‘Calculate_WACC_in_R.Rmd’ using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette ‘Calculate_WACC_in_R.Rmd’ failed with diagnostics:
server certificate verification failed. CAfile: none CRLfile: none
--- failed re-building ‘Calculate_WACC_in_R.Rmd’

SUMMARY: processing the following file failed:
Warning in for (i in seq_along(specs)) { :
  closing unused connection 4 (http://people.stern.nyu.edu/adamodar/New_Home_Page/datafile/wacc.htm)
  ‘Calculate_WACC_in_R.Rmd’

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Namespaces in Imports field not imported from:
  ‘lubridate’ ‘tibble’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Error(s) in re-building vignettes:
--- re-building 'Calculate_WACC_in_R.Rmd' using rmarkdown
Quitting from lines 30-36 (Calculate_WACC_in_R.Rmd) 
Error: processing vignette 'Calculate_WACC_in_R.Rmd' failed with diagnostics:
SSL certificate problem: unable to get local issuer certificate
--- failed re-building 'Calculate_WACC_in_R.Rmd'

SUMMARY: processing the following file failed:
  'Calculate_WACC_in_R.Rmd'

Error: Vignette re-building failed.
Execution halted