NoMethodError in SpjmsController#entry

undefined method `jazykovy_vyklad' for nil:NilClass
Extracted source (around line #647):
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#result.expand_markup_trim( @entry.zemepisny_vyklad ).br
result.expand_markup_trim( fix_puntik( @entry.jazykovy_vyklad ) )
unless @entry.zemepisny_vyklad.to_s.sub(/^\s*$/,'').empty?
result._t(' ').ball.nbsp.expand_markup_trim( rem_puntik( @entry.zemepisny_vyklad ) )
end

Rails.root: /home/martin/rails/spjms-public/spjms-production

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"id"=>"12519"}

Response

Headers:

None