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

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette ‘RegressionEg.Rmd’ failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘ClassificationEg.Rmd’ using rmarkdown
--- finished re-building ‘ClassificationEg.Rmd’

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette ‘RegressionEg.Rmd’ failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘ClassificationEg.Rmd’ using rmarkdown
--- finished re-building ‘ClassificationEg.Rmd’

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette 'RegressionEg.Rmd' failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘ClassificationEg.Rmd’ using rmarkdown
--- finished re-building ‘ClassificationEg.Rmd’

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette 'RegressionEg.Rmd' failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'ClassificationEg.Rmd' using rmarkdown
--- finished re-building 'ClassificationEg.Rmd'

--- re-building 'RegressionEg.Rmd' using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette 'RegressionEg.Rmd' failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building 'RegressionEg.Rmd'

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘ClassificationEg.Rmd’ using rmarkdown
--- finished re-building ‘ClassificationEg.Rmd’

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette ‘RegressionEg.Rmd’ failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘ClassificationEg.Rmd’ using rmarkdown
--- finished re-building ‘ClassificationEg.Rmd’

--- re-building ‘RegressionEg.Rmd’ using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette ‘RegressionEg.Rmd’ failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building ‘RegressionEg.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'ClassificationEg.Rmd' using rmarkdown
--- finished re-building 'ClassificationEg.Rmd'

--- re-building 'RegressionEg.Rmd' using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette 'RegressionEg.Rmd' failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building 'RegressionEg.Rmd'

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'ClassificationEg.Rmd' using rmarkdown
--- finished re-building 'ClassificationEg.Rmd'

--- re-building 'RegressionEg.Rmd' using rmarkdown
Quitting from lines 170-172 (RegressionEg.Rmd) 
Error: processing vignette 'RegressionEg.Rmd' failed with diagnostics:
ℹ In index: 1.
ℹ With name: mpg.
Caused by error in `.f()`:
! Can't subset columns.
✖ Can't convert from <double> to <integer> due to loss of precision.
--- failed re-building 'RegressionEg.Rmd'

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

Error: Vignette re-building failed.
Execution halted