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

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

Quitting from exploringdatasets.Rmd:37-39 [unnamed-chunk-3]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `as.data.frame.integer()`:
! row names contain missing values
---
Backtrace:
     ▆
  1. └─sjmisc::frq(efc$c161sex)
  2.   └─sjmisc:::frq_helper(...)
  3.     └─base::data.frame(table(x, useNA = "always"))
  4.       ├─base::as.data.frame(x[[i]], optional = TRUE)
  5.       └─base::as.data.frame.table(x[[i]], optional = TRUE)
  6.         ├─base::eval(ex)
  7.         │ └─base::eval(ex)
  8.         └─base::data.frame(...)
  9.           ├─base::as.data.frame(x[[i]], optional = TRUE)
 10.           └─base::as.data.frame.integer(x[[i]], optional = TRUE)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'exploringdatasets.Rmd' failed with diagnostics:
row names contain missing values
--- failed re-building ‘exploringdatasets.Rmd’

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

Quitting from recodingvariables.Rmd:42-53 [unnamed-chunk-3]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `as.data.frame.integer()`:
! row names contain missing values
---
Backtrace:
     ▆
  1. └─sjmisc::frq(efc, e17age, auto.grp = 5)
  2.   └─sjmisc:::frq_helper(...)
  3.     └─base::data.frame(table(x, useNA = "always"))
  4.       ├─base::as.data.frame(x[[i]], optional = TRUE)
  5.       └─base::as.data.frame.table(x[[i]], optional = TRUE)
  6.         ├─base::eval(ex)
  7.         │ └─base::eval(ex)
  8.         └─base::data.frame(...)
  9.           ├─base::as.data.frame(x[[i]], optional = TRUE)
 10.           └─base::as.data.frame.integer(x[[i]], optional = TRUE)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'recodingvariables.Rmd' failed with diagnostics:
row names contain missing values
--- failed re-building ‘recodingvariables.Rmd’

SUMMARY: processing the following files failed:
  ‘exploringdatasets.Rmd’ ‘recodingvariables.Rmd’

Error: Vignette re-building failed.
Execution halted