Ruby on Rails

page.css("#{TABLE_DIV_ID} tr")[1..-2].each do |tr|
data_tds = tr.css('td').map{ |td|
td.text.gsub(/[$,](?=\d)/, '').gsub(/\302\240|\s/, ' ').strip
}

first line is saying no method error 'each' do
for nil class

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