active_record/connection_adapters/postgresql_adapter.rb in block in exec_query at line 663 NoMethodError: undefined method `fields' for nil:NilClass

gistfile1.txt

Stacktrace (most recent call first):

  File "active_record/connection_adapters/postgresql_adapter.rb", line 663, in block in exec_query
    ret = ActiveRecord::Result.new(result.fields, result_as_array(result))
  File "active_record/connection_adapters/abstract_adapter.rb", line 280, in block in log
    :binds         => binds) { yield }
  File "active_support/notifications/instrumenter.rb", line 20, in instrument
    yield
  File "active_record/connection_adapters/abstract_adapter.rb", line 275, in log
    @instrumenter.instrument(
  File "new_relic/agent/instrumentation/active_record.rb", line 46, in block in log_with_newrelic_instrumentation
    log_without_newrelic_instrumentation(*args, &block)
  File "new_relic/agent/method_tracer.rb", line 273, in trace_execution_scoped
    yield
  File "new_relic/agent/instrumentation/active_record.rb", line 43, in log_with_newrelic_instrumentation
    self.class.trace_execution_scoped(metrics) do
  File "active_record/connection_adapters/postgresql_adapter.rb", line 659, in exec_query
    log(sql, name, binds) do
  File "active_record/connection_adapters/postgresql_adapter.rb", line 1256, in select
    exec_query(sql, name, binds).to_a
  File "active_record/connection_adapters/abstract/database_statements.rb", line 18, in select_all
    select(to_sql(arel, binds), name, binds)
  File "active_record/connection_adapters/abstract/query_cache.rb", line 63, in select_all
    super
  File "active_record/querying.rb", line 38, in block in find_by_sql
    connection.select_all(sanitize_sql(sql), "#{name} Load", binds).collect! { |record| instantiate(record) }
  File "active_record/explain.rb", line 41, in logging_query_plan
    yield
  File "active_record/querying.rb", line 37, in find_by_sql
    logging_query_plan do
  File "new_relic/agent/method_tracer.rb", line 523, in block in find_by_sql_with_trace_ActiveRecord_self_name_find_by_sql
    "metric = '#{metric_name_code}'")
  File "new_relic/agent/method_tracer.rb", line 273, in trace_execution_scoped
    yield
  File "new_relic/agent/method_tracer.rb", line 518, in find_by_sql_with_trace_ActiveRecord_self_name_find_by_sql
    alias_method method_name, _traced_method_name(method_name, metric_name_code)
  File "active_record/relation.rb", line 171, in exec_queries
    eager_loading? ? find_with_associations : @klass.find_by_sql(arel, @bind_values)
  File "active_record/relation.rb", line 160, in block in to_a
    exec_queries
  File "active_record/explain.rb", line 41, in logging_query_plan
    yield
  File "active_record/relation.rb", line 159, in to_a
    logging_query_plan do
  File "active_record/relation/finder_methods.rb", line 380, in find_first
    @first ||= limit(1).to_a[0]
  File "active_record/relation/finder_methods.rb", line 122, in first
    find_first
  File "active_record/relation/finder_methods.rb", line 338, in find_one
    record = relation.first
  File "friendly_id/finder_methods.rb", line 16, in find_one
    return super if id.unfriendly_id?
  File "active_record/relation/finder_methods.rb", line 314, in find_with_ids
    result = find_one(ids.first)
  File "active_record/relation/finder_methods.rb", line 107, in find
    find_with_ids(*args)
  File "welcome_worker.rb", line 7, in perform
    user = User.includes(:authentications).find(user_id)
  File "sidekiq/processor.rb", line 49, in block (2 levels) in process
    worker.perform(*cloned(msg['args']))
  File "sidekiq/middleware/chain.rb", line 109, in call
    final_action.call
  File "sidekiq/middleware/chain.rb", line 109, in block in invoke
    final_action.call
  File "new_relic/agent/instrumentation/sidekiq.rb", line 25, in block in call
    yield
  File "new_relic/agent/instrumentation/controller_instrumentation.rb", line 318, in perform_action_with_newrelic_trace
    yield
  File "new_relic/agent/instrumentation/sidekiq.rb", line 21, in call
    perform_action_with_newrelic_trace(
  File "sidekiq/middleware/chain.rb", line 111, in block in invoke
    chain.shift.call(*args, &traverse_chain)
  File "raven/sidekiq.rb", line 5, in call
    yield
  File "sidekiq/middleware/chain.rb", line 111, in block in invoke
    chain.shift.call(*args, &traverse_chain)
  File "sidekiq/middleware/server/active_record.rb", line 6, in call
    yield
  File "sidekiq/middleware/chain.rb", line 111, in block in invoke
    chain.shift.call(*args, &traverse_chain)
  File "sidekiq/middleware/server/retry_jobs.rb", line 50, in call
    yield
  File "sidekiq/middleware/chain.rb", line 111, in block in invoke
    chain.shift.call(*args, &traverse_chain)
  File "sidekiq/middleware/server/logging.rb", line 11, in block in call
    yield
  File "sidekiq/logging.rb", line 22, in with_context
    yield
  File "sidekiq/middleware/server/logging.rb", line 7, in call
    Sidekiq::Logging.with_context("#{worker.class.to_s} JID-#{item['jid']}") do
  File "sidekiq/middleware/chain.rb", line 111, in block in invoke
    chain.shift.call(*args, &traverse_chain)
  File "sidekiq/middleware/chain.rb", line 114, in call
    traverse_chain.call
  File "sidekiq/middleware/chain.rb", line 114, in invoke
    traverse_chain.call
  File "sidekiq/processor.rb", line 48, in block in process
    Sidekiq.server_middleware.invoke(worker, msg, queue) do
  File "sidekiq/processor.rb", line 87, in stats
    yield
  File "sidekiq/processor.rb", line 47, in process
    stats(worker, msg, queue) do
  File "celluloid/calls.rb", line 25, in public_send
    obj.public_send(@method, *@arguments, &_block)
  File "celluloid/calls.rb", line 25, in dispatch
    obj.public_send(@method, *@arguments, &_block)
  File "celluloid/calls.rb", line 125, in dispatch
    super(obj)
  File "celluloid/actor.rb", line 328, in block in handle_message
    message.dispatch(@subject)
  File "celluloid/tasks.rb", line 42, in block in initialize
    yield
  File "celluloid/tasks/task_thread.rb", line 20, in block in create
    yield
  File "celluloid/internal_pool.rb", line 59, in call
    proc.call
  File "celluloid/internal_pool.rb", line 59, in block in create
    proc.call