NoMethodError in CollectionLocationsController#index

undefined method `entity_id' for nil:NilClass

Extracted source (around line #18):
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@collection_locations = CollectionLocation.where("animal_id = " + animal_id.to_s + " AND entity_id = " + current_user.entity_id.to_s ).all
else
@collection_locations = CollectionLocation.where("entity_id = " + current_user.entity_id.to_s ).all
end
@collection_locations.each do |cl|

Rails.root: /var/www/vhosts/mosquitoticksite.net/httpdocs

Application Trace | Framework Trace | Full Trace

Request

Parameters:

None

Response

Headers:

None