Phoenix stacktraces

db_connection_dies

09:46:57.136 [error] #PID<0.600.0> running Todos.UI.Endpoint terminated
Server: localhost:4001 (http)
Request: POST /login
** (exit) an exception was raised:
    ** (DBConnection.ConnectionError) connection not available because of disconnection
        (db_connection) lib/db_connection.ex:926: DBConnection.checkout/2
        (db_connection) lib/db_connection.ex:742: DBConnection.run/3
        (db_connection) lib/db_connection.ex:584: DBConnection.prepare_execute/4 
        (ecto) lib/ecto/adapters/postgres/connection.ex:73: Ecto.Adapters.Postgres.Connection.prepare_execute/5
        (ecto) lib/ecto/adapters/sql.ex:256: Ecto.Adapters.SQL.sql_call/6
        (ecto) lib/ecto/adapters/sql.ex:426: Ecto.Adapters.SQL.execute_and_cache/7
        (ecto) lib/ecto/repo/queryable.ex:133: Ecto.Repo.Queryable.execute/5
        (ecto) lib/ecto/repo/queryable.ex:37: Ecto.Repo.Queryable.all/4

error_from_controller

09:52:20.652 [error] #PID<0.602.0> running Todos.UI.Endpoint terminated
Server: localhost:4001 (http)
Request: GET /todos
** (exit) an exception was raised:
    ** (ArithmeticError) bad argument in arithmetic expression
        (ui) lib/ui/controllers/todos_controller.ex:7: Todos.UI.TodosController.index/2
        (ui) lib/ui/controllers/todos_controller.ex:1: Todos.UI.TodosController.action/2
        (ui) lib/ui/controllers/todos_controller.ex:1: Todos.UI.TodosController.phoenix_controller_pipeline/2
        (ui) lib/ui/endpoint.ex:1: Todos.UI.Endpoint.instrument/4
        (phoenix) lib/phoenix/router.ex:278: Phoenix.Router.__call__/1
        (ui) lib/ui/endpoint.ex:1: Todos.UI.Endpoint.plug_builder_call/2
        (ui) lib/plug/debugger.ex:99: Todos.UI.Endpoint."call (overridable 3)"/2
        (ui) lib/ui/endpoint.ex:1: Todos.UI.Endpoint.call/2