Error(s) in re-building vignettes:
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--- re-building ‘mcboost_basics_extensions.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 143-145 (mcboost_basics_extensions.Rmd) 
Error: processing vignette 'mcboost_basics_extensions.Rmd' failed with diagnostics:
need at least two non-NA values to interpolate
--- failed re-building ‘mcboost_basics_extensions.Rmd’

--- re-building ‘mcboost_example.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──
✔ ggplot2 3.3.3     ✔ purrr   0.3.4
✔ tibble  3.1.2     ✔ dplyr   1.0.6
✔ tidyr   1.1.3     ✔ stringr 1.4.0
✔ readr   1.4.0     ✔ forcats 0.5.1
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()

Attaching package: 'neuralnet'

The following object is masked from 'package:dplyr':

    compute

Loading required namespace: mlr3pipelines
nhis.large              package:PracTools              R Documentation

_N_a_t_i_o_n_a_l _H_e_a_l_t_h _I_n_t_e_r_v_i_e_w _S_u_r_v_e_y: _D_e_m_o_g_r_a_p_h_i_c _a_n_d _h_e_a_l_t_h _v_a_r_i_a_b_l_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     Demographic and health related variables from a U.S. national
     household survey

_U_s_a_g_e:

     data(nhis.large)
     
_F_o_r_m_a_t:

     A data frame with 21,588 observations on the following 18
     variables.

     'ID' Identification variable

     'stratum' Sample design stratum

     'psu' Primary sampling unit, numbered within each stratum (1,2)

     'svywt' survey weight

     'sex' Gender (1 = male; 2 = female)

     'age.grp' Age group (1 = < 18 years; 2 = 18-24 years; 3 = 25-44
          years; 4 = 45-64 years; 5 = 65+)

     'hisp' Hispanic ethnicity (1 = Hispanic; 2 = Non-Hispanic White; 3
          = Non-Hispanic Black; 4 = Non-Hispanic All other race groups)

     'parents' Parents present in the household (1 = mother, father, or
          both present; 2 = neither present)

     'educ' Highest level of education attained (1 = High school
          graduate, graduate equivalence degree, or less; 2 = Some
          college; 3 = Bachelor's or associate's degree; 4 = Master's
          degree or higher; NA = missing)

     'race' Race (1 = White; 2 = Black; 3 = All other race groups)

     'inc.grp' Family income group (1 = < $20K; 2 = $20000-$24999; 3 =
          $25000-$34999; 4 = $35000-$44999; 5 = $45000-$54999; 6 =
          $55000-$64999; 7 = $65000-$74999; 8 = $75K+; NA = missing)

     'delay.med' Delayed medical care in last 12 months because of cost
          (1 = Yes; 2 = No; NA = missing)

     'hosp.stay' Had an overnight hospital stay in last 12 months (1 =
          Yes; 2 = No; NA = missing)

     'doc.visit' During 2 WEEKS before interview, did person see a
          doctor or other health care professional at a doctor's
          office, a clinic, an emergency room, or some other place?
          (excluding overnight hospital stay)?  (1 = Yes; 2 = No)

     'medicaid' Covered by medicaid, a governmental subsidy program for
          the poor (1 = Yes; 2 = No; NA = missing)

     'notcov' Not covered by any type of health insurance (1 = Yes; 2 =
          No; NA = missing)

     'doing.lw' What was person doing last week?  (1 = Working for pay
          at a job or business; 2 = With a job or business but not at
          work; 3 = Looking for work; 4 = Working, but not for pay, at
          a job or business; 5 = Not working and not looking for work;
          NA = missing)

     'limited' Is the person limited in any way in any activities
          because of physical, mental or emotional problems?  (1 =
          Limited in some way; 2 = Not limited in any way; NA =
          missing)

_D_e_t_a_i_l_s:

     The National Health Interview Survey (NHIS) is used to monitor
     health conditions in the U.S. Data are collected through personal
     household interviews. Demographic variables and a few health
     related variables are included in this subset. The 'nhis.large'
     data set contains observations on 21,588 persons extracted from
     the 2003 U.S. NHIS survey. The file contains only persons 18 years
     and older.

_S_o_u_r_c_e:

     National Health Interview Survey of 2003 conducted by the U.S.
     National Center for Health Statistics. <URL:
     http://www.cdc.gov/nchs/nhis.htm>

_S_e_e _A_l_s_o:

     'nhis'

_E_x_a_m_p_l_e_s:

     data(nhis.large)
     str(nhis.large)
     table(nhis.large$stratum, nhis.large$psu)
     table(nhis.large$delay.med, useNA="always")
     

hidden: 5    thresh: 0.5    rep: 1/1    steps:    1000	min thresh: 2.26278779438846
                                                  2000	min thresh: 1.91250142218706
                                                  3000	min thresh: 1.24256050865983
                                                  4000	min thresh: 0.83955409008631
                                                  5000	min thresh: 0.666386523773374
                                                  6000	min thresh: 0.589343884941435
                                                  6436	error: 8471.13576	time: 6.85 mins
--- finished re-building ‘mcboost_example.Rmd’

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

Error: Vignette re-building failed.
Execution halted