(ArgumentError) unknown registry: Pleroma.PubSub
Apr 14 20:13:46 Homura mix[20921]: 20:13:46.310 request_id=FnXME7-XHJp9fLcErWbC [info] Sent 200 in 10ms
...skipping...
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:299: Phoenix.Channel.Server.handle_info/2
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:689: :gen_server.try_dispatch/4
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:765: :gen_server.handle_msg/6
Apr 14 21:16:58 Homura mix[20921]: 21:16:58.510 [error] GenServer #PID<0.18450.566> terminating
Apr 14 21:16:58 Homura mix[20921]: ** (ArgumentError) unknown registry: Pleroma.PubSub
Apr 14 21:16:58 Homura mix[20921]: (elixir 1.11.2) lib/registry.ex:1267: Registry.info!/1
Apr 14 21:16:58 Homura mix[20921]: (elixir 1.11.2) lib/registry.ex:920: Registry.register/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix_pubsub 2.0.0) lib/phoenix/pubsub.ex:117: Phoenix.PubSub.subscribe/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:421: Phoenix.Channel.Server.init_join/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:379: Phoenix.Channel.Server.channel_join/4
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:299: Phoenix.Channel.Server.handle_info/2
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:689: :gen_server.try_dispatch/4
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:765: :gen_server.handle_msg/6
Apr 14 21:16:58 Homura mix[20921]: Last message: {Phoenix.Channel, %{}, {#PID<0.18874.565>, #Reference<0.4102558949.2847145985.149428>}, %P
Apr 14 21:16:58 Homura mix[20921]: State: #Reference<0.4102558949.2847145985.149430>
Apr 14 21:16:58 Homura mix[20921]: 21:16:58.515 [error] an exception was raised:
Apr 14 21:16:58 Homura mix[20921]: ** (ArgumentError) unknown registry: Pleroma.PubSub
Apr 14 21:16:58 Homura mix[20921]: (elixir 1.11.2) lib/registry.ex:1267: Registry.info!/1
Apr 14 21:16:58 Homura mix[20921]: (elixir 1.11.2) lib/registry.ex:920: Registry.register/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix_pubsub 2.0.0) lib/phoenix/pubsub.ex:117: Phoenix.PubSub.subscribe/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:421: Phoenix.Channel.Server.init_join/3
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:379: Phoenix.Channel.Server.channel_join/4
Apr 14 21:16:58 Homura mix[20921]: (phoenix 1.5.6) lib/phoenix/channel/server.ex:299: Phoenix.Channel.Server.handle_info/2
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:689: :gen_server.try_dispatch/4
Apr 14 21:16:58 Homura mix[20921]: (stdlib 3.14) gen_server.erl:765: :gen_server.handle_msg/6
Apr 14 21:17:15 Homura mix[20921]: 21:17:15.297 [info] Postgrex.Protocol (#PID<0.1173.0>) disconnected: ** (DBConnection.ConnectionError) c
Apr 14 21:17:17 Homura mix[20921]: 21:17:17.467 [info] Application pleroma exited: shutdown
Don't know why this happened, can I prevent this from happening in the future?