NoMethodError in Sermons#show

Showing /app/app/views/sermons/show.html.erb where line #17 raised:

undefined method `profile_image' for nil:NilClass
Extracted source (around line #17):
15
16
17
18
19
20
              
</div>
<div class="col-md-8 col-xs-12 lightblue-left">
<h4><%= image_tag(@sermon.member.profile_image.file.url(:thumb)) if @sermon.member.profile_image %></h4>
<h4>Preacher | <%= @sermon.member.try(:name) %></h4>
<div class="sermons">

Rails.root: /app

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"id"=>"113"}

Response

Headers:

None