ActiveRecord::StatementInvalid in AlgorithmsController#hero

SQLite3::BusyException: database is locked: SELECT "algorithm_versions".* FROM "algorithm_versions" INNER JOIN "average_metrics" ON "average_metrics"."algorithm_version_id" = "algorithm_versions"."id" INNER JOIN "algorithms" ON "algorithms"."id" = "algorithm_versions"."algorithm_id" WHERE (active_version = 't' AND average_metrics.name_id = 4 ) ORDER BY algorithms.name asc

Rails.root: /srv/www/sintel/releases/20170824150807

Application Trace | Framework Trace | Full Trace
app/controllers/algorithms_controller.rb:72:in `hero'

Request

Parameters:

{"alt"=>"105",
 "flow_type"=>"Error",
 "method_id"=>"531",
 "metric_id"=>"4",
 "selected_pass"=>"1"}

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Response

Headers:

None