Running examples in ‘rmangal-Ex.R’ failed
The error most likely occurred in:

> ### Name: search_references
> ### Title: Query references
> ### Aliases: search_references
> 
> ### ** Examples
> 
> search_references(doi = "10.2307/3225248")
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Found 1 reference(s)
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$id
[1] 132

$doi
[1] "10.2307/3225248"

$first_author
[1] "koslucher"

$year
[1] "1973"

$jstor
[1] "https://www.jstor.org/stable/3225248"

$pmid
[1] NA

$bibtex
[1] "@article{Koslucher_1973, doi = {10.2307/3225248}, url = {https://doi.org/10.2307%2F3225248}, year = 1973, month = {jul}, publisher = {{JSTOR}}, volume = {92}, number = {3}, pages = {441}, author = {Dale G. Koslucher and G. Wayne Minshall}, title = {Food Habits of Some Benthic Invertebrates in a Northern Cool-Desert Stream (Deep Creek, Curlew Valley, Idaho-Utah)}, journal = {Transactions of the American Microscopical Society}}"

$paper_url
[1] "https://www.jstor.org/stable/pdf/3225248.pdf?refreqid=excelsior%3Ae2741b937f74579b7875d7ade8f58f47"

$data_url
[1] "https://globalwebdb.com/"

$created_at
[1] "2019-03-08T19:27:48.551Z"

$updated_at
[1] "2019-03-08T19:27:48.551Z"

$datasets
   id                    name
1 133 koslucher_minshall_1973
                                                                                  description
1 Food web strucutre of a noterhen cool-desert stream (Deep Creek), Curlew Valley, Idaho-Utah
  public               created_at               updated_at ref_id user_id
1   TRUE 2019-03-08T19:27:50.152Z 2019-03-08T19:27:50.152Z    132       4

$networks
$networks[[1]]
    id                    name                     date
1 1517 koslucher_minshall_1973 1969-11-01T00:00:00.000Z
                                                                                  description
1 Food web strucutre of a noterhen cool-desert stream (Deep Creek), Curlew Valley, Idaho-Utah
  public all_interactions               created_at               updated_at
1   TRUE            FALSE 2019-03-08T19:27:51.061Z 2019-03-08T19:27:51.061Z
  dataset_id user_id geom_type geom_lon geom_lat
1        133       4      <NA>       NA       NA


attr(,"row.names")
[1] 1
attr(,"class")
[1] "mgSearchReferences"
> search_references(list(jstor = 3683041))
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Found 1 reference(s)
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$id
[1] 9

$doi
[1] "10.2307/3683041"

$first_author
[1] "elberling"

$year
[1] "1999"

$jstor
[1] "3683041"

$pmid
[1] NA

$bibtex
[1] "@article{10.2307/3683041, ISSN = {09067590, 16000587}, URL = {http://www.jstor.org/stable/3683041}, author = {Heidi Elberling and Jens M. Olesen}, journal = {Ecography}, number = {3}, pages = {314-323}, publisher = {[Nordic Society Oikos, Wiley]}, title = {The Structure of a High Latitude Plant-Flower Visitor System: The Dominance of Flies}, volume = {22}, year = {1999}}"

$paper_url
[1] "https://www.jstor.org/stable/3683041?seq=1#page_scan_tab_contents"

$data_url
[1] "https://www.nceas.ucsb.edu/interactionweb/data/plant_pollinator/excel/elberling&olesen_1999.xls"

$created_at
[1] "2019-02-22T20:09:13.872Z"

$updated_at
[1] "2019-02-22T20:09:13.872Z"

$datasets
  id                  name
1  9 elberling_olesen_1999
                                                  description public
1 Flower-visiting insect at Mt. Latnjatjarro, northern Sweden   TRUE
                created_at               updated_at ref_id user_id
1 2019-02-22T20:09:17.994Z 2019-02-22T20:09:17.994Z      9       2

$networks
$networks[[1]]
   id                               name                     date
1 909 elberling_olesen_1999_19940823_909 1994-08-23T00:00:00.000Z
                                                  description public
1 Flower-visiting insect at Mt. Latnjatjarro, northern Sweden   TRUE
  all_interactions               created_at               updated_at dataset_id
1            FALSE 2019-02-24T22:21:32.444Z 2019-02-24T22:21:32.444Z          9
  user_id geom_type geom_lon geom_lat
1       2     Point     18.5    68.35


attr(,"row.names")
[1] 1
attr(,"class")
[1] "mgSearchReferences"
> search_references(list(year = 2010))
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Found 5 reference(s)
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Error in curl::curl_fetch_memory(url, handle = handle) : 
  Failed to connect to mangal.io port 443: Connection refused
Calls: search_references ... request_fetch -> request_fetch.write_memory -> <Anonymous>
Execution halted