Exception while parsing show page

[unhappychoice]

#<Irasutoya::IrasutoLink:0x00007fe73487a000 @title="\u304A\u3058\u3055\u3093\u306E\u9854\u306E\u30A2\u30A4\u30B3\u30F3", @show_url="https://www.irasutoya.com/2013/10/blog-post_872.html">

[2020-11-06 02:19:52 UTC] ERROR: Lita::Handlers::Irasutoya crashed. The exception was:
undefined method `text' for nil:NilClass
Full backtrace:
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/vendor/bundle/gems/irasutoya-1.1.0/lib/irasutoya/modules/has_show_page_parser.rb:29:in `description_from'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/vendor/bundle/gems/irasutoya-1.1.0/lib/irasutoya/modules/has_show_page_parser.rb:16:in `parse_show_page'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/vendor/bundle/gems/irasutoya-1.1.0/lib/irasutoya/irasuto_link.rb:17:in `fetch_irasuto'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/lib/lita/handlers/irasutoya.rb:16:in `block (2 levels) in <class:Irasutoya>'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/lib/lita/handlers/irasutoya.rb:16:in `each'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/lib/lita/handlers/irasutoya.rb:16:in `flat_map'
/Users/yuji/.ghq/github.com/unhappychoice/lita-irasutoya/lib/lita/handlers/irasutoya.rb:16:in `block in <class:Irasutoya>`