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

--- re-building ‘B-search.Rmd’ using rmarkdown

Quitting from lines 21-24 [unnamed-chunk-1] (B-search.Rmd)
Error: processing vignette ‘B-search.Rmd’ failed with diagnostics:
Internal Server Error (HTTP 500). Failed to Exception running search for [Gary King] with filterQueries [dvObjectType:(dataverses OR datasets OR files), ] and paginationStart [0]: edu.harvard.iq.dataverse.search.SearchException: Internal Dataverse Search Engine Error org.apache.solr.client.solrj.SolrServerException org.apache.solr.client.solrj.SolrServerException: Server refused connection at: http://dvn-cloud-solr.lib.harvard.edu:8983/solr/collection1 org.apache.http.conn.HttpHostConnectException org.apache.http.conn.HttpHostConnectException: Connect to dvn-cloud-solr.lib.harvard.edu:8983 [dvn-cloud-solr.lib.harvard.edu/10.137.167.60] failed: Connection refused (Connection refused) java.net.ConnectException java.net.ConnectException: Connection refused (Connection refused) .
--- failed re-building ‘B-search.Rmd’

--- re-building ‘C-download.Rmd’ using rmarkdown

Quitting from lines 46-50 [unnamed-chunk-3] (C-download.Rmd)
Error: processing vignette ‘C-download.Rmd’ failed with diagnostics:
Internal Server Error (HTTP 500). Failed to Exception running search for [entityId:2692296] with filterQueries [dvObjectType:(files), ] and paginationStart [0]: edu.harvard.iq.dataverse.search.SearchException: Internal Dataverse Search Engine Error org.apache.solr.client.solrj.SolrServerException org.apache.solr.client.solrj.SolrServerException: Server refused connection at: http://dvn-cloud-solr.lib.harvard.edu:8983/solr/collection1 org.apache.http.conn.HttpHostConnectException org.apache.http.conn.HttpHostConnectException: Connect to dvn-cloud-solr.lib.harvard.edu:8983 [dvn-cloud-solr.lib.harvard.edu/10.137.167.60] failed: Connection refused (Connection refused) java.net.ConnectException java.net.ConnectException: Connection refused (Connection refused) .
--- failed re-building ‘C-download.Rmd’

SUMMARY: processing the following files failed:
  ‘B-search.Rmd’ ‘C-download.Rmd’

Error: Vignette re-building failed.
Execution halted