Error in re-building vignettes:
  ...
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATE and pooled.

Attaching package: 'MatchIt'

The following object is masked _by_ '.GlobalEnv':

    lalonde

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

    lalonde

Using a series of 3 binomial logit regressions.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Loading required package: gbm
Loaded gbm 2.1.4
Loading required package: survey
Loading required package: grid
Loading required package: Matrix
Loading required package: survival

Attaching package: 'survey'

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

    dotchart

Loading required package: xtable
Loading required package: lattice
Loading required package: latticeExtra
Loading required package: RColorBrewer
Warning in ps(f.build("treat", covs0), data = lalonde, stop.method = "es.max",  :
  Optimal number of iterations is close to the specified n.trees. n.trees is likely set too small and better balance might be obtainable by setting n.trees to be larger.
Loading required package: MASS
## 
##  Matching (Version 4.9-3, Build Date: 2018-05-03)
##  See http://sekhon.berkeley.edu/matching for additional documentation.
##  Please cite software as:
##   Jasjeet S. Sekhon. 2011. ``Multivariate and Propensity Score Matching
##   Software with Automated Balance Optimization: The Matching package for R.''
##   Journal of Statistical Software, 42(7): 1-52. 
##

The optmatch package has an academic license. Enter relaxinfo() for more information.
Loading required package: nnet
Loading required package: numDeriv
Loading required package: glmnet
Loading required package: foreach
Loaded glmnet 2.0-16

CBPS: Covariate Balancing Propensity Score
Version: 0.19
Authors: Christian Fong [aut, cre],
  Marc Ratkovic [aut],
  Kosuke Imai [aut],
  Chad Hazlett [ctb],
  Xiaolin Yang [ctb],
  Sida Peng [ctb]

##
## ebal Package: Implements Entropy Balancing.

## See http://www.stanford.edu/~jhain/ for additional information.


Loading required package: slam
Loading required package: Rglpk
Using the GLPK callable library version 4.47

Attaching package: 'designmatch'

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

    ecdfplot

Assuming "weighting". If not, specify with an argument to method.

Attaching package: 'mice'

The following objects are masked from 'package:base':

    cbind, rbind

Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
Note: estimand and s.d.denom not specified; assuming ATT and treated.
'by' has replaced 'exact' in the weightit() syntax, but 'exact' will always work.
Quitting from lines 212-220 (cobalt_A2_cluster_imp.Rmd) 
Error: processing vignette 'cobalt_A2_cluster_imp.Rmd' failed with diagnostics:
The name supplied to imp is not the name of a variable in data.
Execution halted