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

--- re-building ‘case-1-pleiotropy.Rmd’ using rmarkdown

Attaching package: 'dplyr'

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

    filter, lag

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

    intersect, setdiff, setequal, union


Attaching package: 'purrr'

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

    set_names


Attaching package: 'glue'

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

    collapse


Attaching package: 'igraph'

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

    compose, simplify

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

    as_data_frame, groups, union

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

    decompose, spectrum

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

    union


    EpiGraphDB v1.0 (API: https://api.epigraphdb.org)
  
--- finished re-building ‘case-1-pleiotropy.Rmd’

--- re-building ‘case-2-alt-drug-target.Rmd’ using rmarkdown
--- finished re-building ‘case-2-alt-drug-target.Rmd’

--- re-building ‘case-3-literature-triangulation.Rmd’ using rmarkdown
Quitting from lines 124-146 (case-3-literature-triangulation.Rmd) 
Error: processing vignette 'case-3-literature-triangulation.Rmd' failed with diagnostics:
Bad Gateway (HTTP 502).
Detail:
{html_document}
<html>
[1] <head>\n<meta http-equiv="Content-Type" content="text/html; charset=UTF-8 ...
[2] <body>\n<h1>Proxy Error</h1>\n<p>The proxy server received an invalid\r\n ...do.call(method, args = list(route = route, params = params, retry_times = retry_times, retry_pause_min = retry_pause_min, call = call))
--- failed re-building ‘case-3-literature-triangulation.Rmd’

--- re-building ‘getting-started-with-epigraphdb-r.Rmd’ using rmarkdown
--- finished re-building ‘getting-started-with-epigraphdb-r.Rmd’

--- re-building ‘meta-functionalities.Rmd’ using rmarkdown
--- finished re-building ‘meta-functionalities.Rmd’

--- re-building ‘options.Rmd’ using rmarkdown
--- finished re-building ‘options.Rmd’

--- re-building ‘using-epigraphdb-api.Rmd’ using rmarkdown
--- finished re-building ‘using-epigraphdb-api.Rmd’

--- re-building ‘using-epigraphdb-r-package.Rmd’ using rmarkdown
--- finished re-building ‘using-epigraphdb-r-package.Rmd’

SUMMARY: processing the following file failed:
  ‘case-3-literature-triangulation.Rmd’

Error: Vignette re-building failed.
Execution halted