NoMethodError in Articles#show

Showing /app/app/views/articles/_article_suggestions.html.slim where line #16 raised:

undefined method `name' for nil:NilClass
Extracted source (around line #16):
14
15
16
17
              
h5 = article.title
.m-box-info
h6.author = article.author.name
p.number.comments-count = article.comments.count

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

Rails.root: /app

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"slug"=>"como-fazer-iogurte-caseiro-e-cremoso-passo-a-passo"}

Response

Headers:

None