NoMethodError in IllustsController#special_illust

undefined method `each' for nil:NilClass

Extracted source (around line #401):
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special_sort = Array.new #表示用データ格納用
array.each{|search|
searched = Illust.search(search) #データ取得
special_connect.concat(searched) #配列結合
}

Rails.root: /var/www/html/illustplus

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"special"=>"winter_event2021"}

Response

Headers:

None