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

Quitting from NNSvignette_Classification.Rmd:46-48 [rhs]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `[.data.table`:
! attempt access index 7/7 in VECTOR_ELT
---
Backtrace:
    ▆
 1. └─NNS::NNS.reg(iris[, 1:4], iris[, 5], residual.plot = FALSE, ncores = 1)
 2.   └─NNS:::NNS.M.reg(...)
 3.     ├─...[]
 4.     └─data.table:::`[.data.table`(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'NNSvignette_Classification.Rmd' failed with diagnostics:
attempt access index 7/7 in VECTOR_ELT
--- failed re-building ‘NNSvignette_Classification.Rmd’

--- re-building ‘NNSvignette_Clustering_and_Regression.Rmd’ using rmarkdown

Quitting from NNSvignette_Clustering_and_Regression.Rmd:56-58 [depreg}]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `[.data.table`:
! attempt access index 6/6 in VECTOR_ELT
---
Backtrace:
    ▆
 1. └─NNS::NNS.reg(x, y, order = i, ncores = 1)
 2.   ├─...[]
 3.   └─data.table:::`[.data.table`(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'NNSvignette_Clustering_and_Regression.Rmd' failed with diagnostics:
attempt access index 6/6 in VECTOR_ELT
--- failed re-building ‘NNSvignette_Clustering_and_Regression.Rmd’

--- re-building ‘NNSvignette_Comparing_Distributions.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘NNSvignette_Comparing_Distributions.Rmd’

--- re-building ‘NNSvignette_Correlation_and_Dependence.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘NNSvignette_Correlation_and_Dependence.Rmd’

--- re-building ‘NNSvignette_Forecasting.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘NNSvignette_Forecasting.Rmd’

--- re-building ‘NNSvignette_Overview.Rmd’ using rmarkdown

Quitting from NNSvignette_Overview.Rmd:243-252 [unnamed-chunk-9]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `[.data.table`:
! attempt access index 6/6 in VECTOR_ELT
---
Backtrace:
    ▆
 1. └─NNS::NNS.reg(x = data.frame(x = x_train), y = y_train, order = NULL)
 2.   ├─...[]
 3.   └─data.table:::`[.data.table`(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'NNSvignette_Overview.Rmd' failed with diagnostics:
attempt access index 6/6 in VECTOR_ELT
--- failed re-building ‘NNSvignette_Overview.Rmd’

--- re-building ‘NNSvignette_Partial_Moments.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘NNSvignette_Partial_Moments.Rmd’

--- re-building ‘NNSvignette_Sampling.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘NNSvignette_Sampling.Rmd’

SUMMARY: processing the following files failed:
  ‘NNSvignette_Classification.Rmd’
  ‘NNSvignette_Clustering_and_Regression.Rmd’
  ‘NNSvignette_Overview.Rmd’

Error: Vignette re-building failed.
Execution halted