NoMethodError in ShelfController#datalist

undefined method `entries' for nil:NilClass

Extracted source (around line #339):
337
338
339
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342
              
shelf = getshelf
jsonstr = shelf.entries.collect { |entry|
book = entry.book
{
title: book.title,

Rails.root: /app

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"shelfname"=>"akizo_mickey"}

Response

Headers:

None