$ bundle exec relaton version
CLI => 1.20.0
relaton => 1.20.0
relaton-bib => 1.20.5
relaton-iso-bib => 1.20.0
relaton-gb => 1.20.0
relaton-iec => 1.20.0
relaton-ietf => 1.20.0
relaton-iso => 1.20.0
relaton-itu => 1.20.1
relaton-nist => 1.20.0
relaton-ogc => 1.20.0
relaton-calconnect => 1.20.0
relaton-omg => 1.20.0
relaton-un => 1.20.1
relaton-w3c => 1.20.0
relaton-ieee => 1.20.0
relaton-iho => 1.20.0
relaton-bipm => 1.20.3
relaton-ecma => 1.20.0
relaton-cie => 1.20.0
relaton-bsi => 1.20.0
relaton-cen => 1.20.0
relaton-iana => 1.20.0
relaton-3gpp => 1.20.0
relaton-oasis => 1.20.0
relaton-doi => 1.20.0
relaton-jis => 1.20.0
relaton-xsf => 1.20.0
relaton-ccsds => 1.20.2
relaton-etsi => 1.20.0
relaton-isbn => 1.20.0
relaton/plateau => 1.20.0
$ relaton fetch 'isbn:9781107683167'
gems/relaton-bib-1.20.5/lib/relaton_bib/bibliographic_item.rb:266:in `initialize': undefined method `map' for nil (NoMethodError)
@place = args.fetch(:place, []).map do |pl|
^^^^
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:18:in `new'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:18:in `parse'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:13:in `parse'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/open_library.rb:25:in `get'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/processor.rb:20:in `get'
from gems/relaton-1.20.0/lib/relaton/db.rb:193:in `fetch_doc'
from gems/relaton-1.20.0/lib/relaton/db.rb:495:in `net_retry'
from gems/relaton-1.20.0/lib/relaton/db.rb:448:in `fetch_entry'
from gems/relaton-1.20.0/lib/relaton/db.rb:436:in `new_bib_entry'
from gems/relaton-1.20.0/lib/relaton/db.rb:408:in `check_bibliocache'
from gems/relaton-1.20.0/lib/relaton/db.rb:70:in `fetch'
from gems/relaton-cli-1.20.0/lib/relaton/cli/command.rb:189:in `fetch_document'
from gems/relaton-cli-1.20.0/lib/relaton/cli/command.rb:37:in `fetch'
from gems/thor-1.3.2/lib/thor/command.rb:28:in `run'
from gems/thor-hollaback-0.2.1/lib/thor/hollaback.rb:71:in `block in run'
from gems/hollaback-0.1.1/lib/hollaback/sequence.rb:34:in `call'
from gems/thor-hollaback-0.2.1/lib/thor/hollaback.rb:71:in `run'
from gems/thor-1.3.2/lib/thor/invocation.rb:127:in `invoke_command'
from gems/thor-1.3.2/lib/thor.rb:538:in `dispatch'
from gems/thor-1.3.2/lib/thor/base.rb:584:in `start'
from gems/relaton-cli-1.20.0/lib/relaton/cli.rb:60:in `start'
from gems/relaton-cli-1.20.0/exe/relaton:20:in `<top (required)>'
$ relaton fetch 'isbn:9780861543212'
gems/relaton-bib-1.20.5/lib/relaton_bib/bibliographic_item.rb:266:in `initialize': undefined method `map' for nil (NoMethodError)
@place = args.fetch(:place, []).map do |pl|
^^^^
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:18:in `new'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:18:in `parse'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/parser.rb:13:in `parse'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/open_library.rb:25:in `get'
from gems/relaton-isbn-1.20.0/lib/relaton_isbn/processor.rb:20:in `get'
from gems/relaton-1.20.0/lib/relaton/db.rb:193:in `fetch_doc'
from gems/relaton-1.20.0/lib/relaton/db.rb:495:in `net_retry'
from gems/relaton-1.20.0/lib/relaton/db.rb:448:in `fetch_entry'
from gems/relaton-1.20.0/lib/relaton/db.rb:436:in `new_bib_entry'
from gems/relaton-1.20.0/lib/relaton/db.rb:408:in `check_bibliocache'
from gems/relaton-1.20.0/lib/relaton/db.rb:70:in `fetch'
from gems/relaton-cli-1.20.0/lib/relaton/cli/command.rb:189:in `fetch_document'
from gems/relaton-cli-1.20.0/lib/relaton/cli/command.rb:37:in `fetch'
from gems/thor-1.3.2/lib/thor/command.rb:28:in `run'
from gems/thor-hollaback-0.2.1/lib/thor/hollaback.rb:71:in `block in run'
from gems/hollaback-0.1.1/lib/hollaback/sequence.rb:34:in `call'
from gems/thor-hollaback-0.2.1/lib/thor/hollaback.rb:71:in `run'
from gems/thor-1.3.2/lib/thor/invocation.rb:127:in `invoke_command'
from gems/thor-1.3.2/lib/thor.rb:538:in `dispatch'
from gems/thor-1.3.2/lib/thor/base.rb:584:in `start'
from gems/relaton-cli-1.20.0/lib/relaton/cli.rb:60:in `start'
from gems/relaton-cli-1.20.0/exe/relaton:20:in `<top (required)>'
