Dialyzer: pattern can never match the type because it is covered by previous clauses.

lib/pleroma/frontend.ex

@@ -43,10 +43,6 @@ def install(name, opts \\ []) do
       {:download_or_unzip, _} ->
         Logger.info("Could not download or unzip the frontend")
         {:error, "Could not download or unzip the frontend"}
-
-      _e ->
-        Logger.info("Could not install the frontend")
-        {:error, "Could not install the frontend"}
     end
   end
 

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -1661,7 +1661,6 @@ def fetch_follow_information_for_user(user) do
        }}
     else
       {:error, _} = e -> e
-      e -> {:error, e}
     end
   end
 

lib/pleroma/web/activity_pub/mrf/nsfw_api_policy.ex

@@ -137,7 +137,6 @@ def filter(object) do
       {:ok, object}
     else
       {:nsfw, _data} -> handle_nsfw(object)
-      _ -> {:reject, "NSFW: Attachment rejected"}
     end
   end
 

lib/pleroma/web/activity_pub/mrf/simple_policy.ex

@@ -222,7 +222,6 @@ def filter(%{"actor" => actor} = object) do
     else
       {:reject, nil} -> {:reject, "[SimplePolicy]"}
       {:reject, _} = e -> e
-      _ -> {:reject, "[SimplePolicy]"}
     end
   end
 
@@ -238,7 +237,6 @@ def filter(%{"id" => actor, "type" => obj_type} = object)
     else
       {:reject, nil} -> {:reject, "[SimplePolicy]"}
       {:reject, _} = e -> e
-      _ -> {:reject, "[SimplePolicy]"}
     end
   end
 
@@ -251,7 +249,6 @@ def filter(object) when is_binary(object) do
     else
       {:reject, nil} -> {:reject, "[SimplePolicy]"}
       {:reject, _} = e -> e
-      _ -> {:reject, "[SimplePolicy]"}
     end
   end
 

lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex

@@ -31,7 +31,6 @@ def filter(%{"type" => message_type} = message) do
       {:reject, _} = e -> e
       {:accepted, _} -> {:reject, "[VocabularyPolicy] #{message_type} not in accept list"}
       {:rejected, _} -> {:reject, "[VocabularyPolicy] #{message_type} in reject list"}
-      _ -> {:reject, "[VocabularyPolicy]"}
     end
   end
 

lib/pleroma/web/admin_api/controllers/invite_controller.ex

@@ -46,7 +46,6 @@ def revoke(%{private: %{open_api_spex: %{body_params: %{token: token}}}} = conn,
       render(conn, "show.json", invite: updated_invite)
     else
       nil -> {:error, :not_found}
-      error -> error
     end
   end
 

lib/pleroma/web/common_api.ex

@@ -611,7 +611,6 @@ def update_report_state(activity_id, state) do
       Utils.update_report_state(activity, state)
     else
       nil -> {:error, :not_found}
-      _ -> {:error, dgettext("errors", "Could not update state")}
     end
   end
 

lib/pleroma/web/twitter_api/controllers/util_controller.ex

@@ -207,9 +207,6 @@ def change_password(
           {:error, changeset} ->
             {_, {error, _}} = Enum.at(changeset.errors, 0)
             json(conn, %{error: "New password #{error}."})
-
-          _ ->
-            json(conn, %{error: "Unable to change password."})
         end
 
       {:error, msg} ->