Stack trace
DBConnection.ConnectionError: (DBConnection.ConnectionError) tcp recv: closed (the connection was closed by the pool, possibly due to a timeout or because the pool has been terminated)
(ecto_sql) lib/ecto/adapters/sql.ex:612: Ecto.Adapters.SQL.raise_sql_call_error/1
(ecto_sql) lib/ecto/adapters/sql.ex:545: Ecto.Adapters.SQL.execute/5
(ecto) lib/ecto/repo/queryable.ex:192: Ecto.Repo.Queryable.execute/4
(ecto) lib/ecto/repo/queryable.ex:17: Ecto.Repo.Queryable.all/3
(diamond) lib/diamond/concepts/experiment/update_count_for_each_running_experiment.ex:21: Diamond.Concepts.Experiment.UpdateCountForEachRunningExperiment.fetch_count/1
(diamond) lib/diamond/concepts/experiment/update_count_for_each_running_experiment.ex:10: Diamond.Concepts.Experiment.UpdateCountForEachRunningExperiment.call/0
(quantum) lib/quantum/executor.ex:141: anonymous fn/2 in Quantum.Executor.run/4
(elixir) lib/task/supervised.ex:90: Task.Supervised.invoke_mfa/2
(quantum) anonymous fn() in Quantum.Executor.run/4

config.exs

config :diamond, Diamond.Scheduler,
  jobs: [
    {"*/60 * * * *", {Diamond.Concepts.Experiment.UpdateCountForEachRunningExperiment, :call, []}}
  ]

Also sometimes I get

15:00:15.060 [error] Postgrex.Protocol (#PID<0.2309.0>) disconnected: ** (DBConnection.ConnectionError) client #PID<0.28048.4> timed out because it queued and checked out the connection for longer than 15000ms

#PID<0.28048.4> was at location:

    :prim_inet.recv0/3
    (postgrex) lib/postgrex/protocol.ex:2837: Postgrex.Protocol.msg_recv/4
    (postgrex) lib/postgrex/protocol.ex:1879: Postgrex.Protocol.recv_bind/3
    (postgrex) lib/postgrex/protocol.ex:1771: Postgrex.Protocol.bind_execute/4
    (db_connection) lib/db_connection/holder.ex:316: DBConnection.Holder.holder_apply/4
    (db_connection) lib/db_connection.ex:1255: DBConnection.run_execute/5
    (db_connection) lib/db_connection.ex:1342: DBConnection.run/6
    (db_connection) lib/db_connection.ex:539: DBConnection.parsed_prepare_execute/5

I have been getting this error in production sicen ages and I have increase the time in cron still it didn’t help.
Can anyone please help me here.

Thanks