Don't error on rich media fail

lib/pleroma/web/rich_media/helpers.ex

@@ -97,6 +97,11 @@ defmodule Pleroma.Web.RichMedia.Helpers do
       end
 
     with :ok <- head_check, do: Pleroma.HTTP.get(url, headers, @options)
+
+    rescue
+      e ->
+        Logger.error("Failed to fetch rich media: #{inspect(e)}")
+        {:error, :fetch_error}
   end
 
   defp check_content_type(headers) do

test/pleroma/web/rich_media/helpers_test.exs

@@ -81,4 +81,9 @@ defmodule Pleroma.Web.RichMedia.HelpersTest do
     assert %{} = Helpers.fetch_data_for_activity(activity4)
     assert %{} = Helpers.fetch_data_for_activity(activity5)
   end
+
+  test "catches errors in fetching" do
+    Tesla.Mock.mock(fn _ -> raise ArgumentError end)
+    assert {:error, :fetch_error} == Helpers.rich_media_get("wp-json/oembed/1.0/embed?url=http:%252F%252F")
+  end
 end