ActiveRecord::RecordNotFound in LagController#index

Couldn't find Group with 'id'=innmeldingsskjema

Extracted source (around line #65):
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@page = page
@right_column = 1
group = Group.find(id)
@description = group.description
@groupname = group.name
norinitialize()

Rails.root: /home/app/webapp

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"lag"=>"medlem",
 "id"=>"innmeldingsskjema",
 "format"=>"htm"}

Response

Headers:

None