Pleroma.Web.PleromaAPI.ChatController: Dialyzer error

lib/pleroma/web/pleroma_api/controllers/chat_controller.ex:128:call
The function call will not succeed.

Phoenix.Controller.render(
  _conn :: %{
    :assigns => %{:user => _, _ => _},
    :body_params => %{:last_read_id => _, _ => _},
    _ => _
  },
  <<115, 104, 111, 119, 46, 106, 115, 111, 110>>,
  [
    {:chat,
     %Pleroma.Chat{
       :__meta__ => _,
       :id => _,
       :inserted_at => _,
       :recipient => _,
       :updated_at => _,
       :user => _,
       :user_id => _
     }},
    ...
  ]
)

will never return since the success typing is:
(
  %Plug.Conn{
    :adapter => {atom(), _},
    :assigns => %{atom() => _},
    :body_params => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
    :cookies => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
    :halted => boolean(),
    :host => binary(),
    :method => binary(),
    :owner => pid(),
    :params => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
    :path_info => [binary()],
    :path_params => %{binary() => binary() | [any()] | map()},
    :port => char(),
    :private => %{atom() => _},
    :query_params => %Plug.Conn.Unfetched{
      :aspect => atom(),
      binary() => binary() | [any()] | map()
    },
    :query_string => binary(),
    :remote_ip =>
      {byte(), byte(), byte(), byte()}
      | {char(), char(), char(), char(), char(), char(), char(), char()},
    :req_cookies => %Plug.Conn.Unfetched{:aspect => atom(), binary() => binary()},
    :req_headers => [{_, _}],
    :request_path => binary(),
    :resp_body =>
      nil
      | binary()
      | maybe_improper_list(
          binary() | maybe_improper_list(any(), binary() | []) | byte(),
          binary() | []
        ),
    :resp_cookies => %{binary() => map()},
    :resp_headers => [{_, _}],
    :scheme => :http | :https,
    :script_name => [binary()],
    :secret_key_base => nil | binary(),
    :state =>
      :chunked | :file | :sent | :set | :set_chunked | :set_file | :unset | :upgraded,
    :status => nil | non_neg_integer()
  },
  atom() | binary(),
  atom() | binary() | [{_, _}] | map()
) :: %Plug.Conn{
  :adapter => {atom(), _},
  :assigns => %{atom() => _},
  :body_params => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
  :cookies => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
  :halted => boolean(),
  :host => binary(),
  :method => binary(),
  :owner => pid(),
  :params => %Plug.Conn.Unfetched{:aspect => atom(), binary() => _},
  :path_info => [binary()],
  :path_params => %{binary() => binary() | [any()] | map()},
  :port => char(),
  :private => %{atom() => _},
  :query_params => %Plug.Conn.Unfetched{
    :aspect => atom(),
    binary() => binary() | [any()] | map()
  },
  :query_string => binary(),
  :remote_ip =>
    {byte(), byte(), byte(), byte()}
    | {char(), char(), char(), char(), char(), char(), char(), char()},
  :req_cookies => %Plug.Conn.Unfetched{:aspect => atom(), binary() => binary()},
  :req_headers => [{_, _}],
  :request_path => binary(),
  :resp_body =>
    nil
    | binary()
    | maybe_improper_list(
        binary() | maybe_improper_list(any(), binary() | []) | byte(),
        binary() | []
      ),
  :resp_cookies => %{binary() => map()},
  :resp_headers => [{_, _}],
  :scheme => :http | :https,
  :script_name => [binary()],
  :secret_key_base => nil | binary(),
  :state => :sent,
  :status => nil | non_neg_integer()
}

and the contract is
(Plug.Conn.t(), binary() | atom(), Keyword.t() | map()) :: Plug.Conn.t()

lib/pleroma/web/api_spec/operations/chat_operation.ex

@@ -368,9 +368,9 @@ def mark_as_read do
       title: "MarkAsReadRequest",
       description: "POST body for marking a number of chat messages as read",
       type: :object,
-      required: [:last_read_id],
+      required: ["last_read_id"],
       properties: %{
-        last_read_id: %Schema{
+        "last_read_id" => %Schema{
           type: :string,
           description: "The content of your message."
         }

lib/pleroma/web/pleroma_api/controllers/chat_controller.ex

@@ -120,7 +120,7 @@ def mark_message_as_read(
   end
 
   def mark_as_read(
-        %{body_params: %{last_read_id: last_read_id}, assigns: %{user: user}} = conn,
+        %{body_params: %{"last_read_id" => last_read_id}, assigns: %{user: user}} = conn,
         %{id: id}
       ) do
     with {:ok, chat} <- Chat.get_by_user_and_id(user, id),