Allow to refresh instance outbox when they accept subscription

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/api/follows.ex

@@ -16,6 +16,10 @@ defmodule Mobilizon.GraphQL.API.Follows do
       {:ok, activity, follow} ->
         {:ok, activity, follow}
 
+      {:error, e} ->
+        Logger.warn("Error while following actor: #{inspect(e)}")
+        {:error, e}
+
       e ->
         Logger.warn("Error while following actor: #{inspect(e)}")
         {:error, e}

lib/graphql/resolvers/admin.ex

@@ -249,7 +249,7 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
       {:ok, _activity, follow} ->
         {:ok, follow}
 
-      {:error, {:error, err}} when is_bitstring(err) ->
+      {:error, err} when is_binary(err) ->
         {:error, err}
     end
   end