NoMethodError in Specials#calendario

Showing /var/www/beta_villagroup_rediseno/app/views/specials/calendario.html.haml where line #21 raised:

undefined method `title_lang' for nil:NilClass
Extracted source (around line #21):
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.col-12.text-center.pb-3
%h1.title-calendar.mb-3
=@special.title_lang
%h2.title-calendar
=t('promo_calendar_title')
=image_tag vlevel_icon('black'),alt:"V-Level", title: "V-Level", class:"vlevel"

Rails.root: /var/www/beta_villagroup_rediseno

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"id_global"=>"15", "slug_en"=>"book-to-the-new-future"}

Response

Headers:

None