ruby-on-rails - エラー: Ruby on rails でアプリを実行中に文字列を整数に変換できません

Question

行番号 156が発生したapp/views/student/edit.erb を表示:

can't convert String into Integer

抽出されたソース (156 行目あたり):

154:<div class="label-field-pair">
155:<label for="student_country"><%= t('select_native') %></label>
156:<div class="text-input-bg_form"> <%= select :student,  :select_native, [["Arab","arab"]["Non Arab","non_arab" ]],  { :prompt => "#{t('select_native')}" } %> </div>
157:</div>
158: 
159: