ActionController::UrlGenerationError in Articles#show

Showing /app/app/views/articles/_seo_tags.html.slim where line #15 raised:

No route matches {:action=>"show", :controller=>"users", :slug=>nil} missing required keys: [:slug]
Extracted source (around line #15):
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description: meta_description, \
keywords: @article.collections.collect(&:name), \
publisher: user_url(@article.author), \
image: @article.thumbnail.try(:url), \
canonical: calculated_canonical_url,\
rel: { author: user_url(@article.author), publisher: "https://www.papodehomem.com.br", canonical: calculated_canonical_url }

Trace of template inclusion: app/views/articles/show.html.slim

Rails.root: /app

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"slug"=>"como-fazer-um-brownie-meio-amargo-de-cafe-e-nozes"}

Response

Headers:

None