pipeline fix

app.py

@@ -9,7 +9,13 @@ from functools import cache, cached_property, reduce
 from pathlib import Path
 from typing import TYPE_CHECKING, Annotated, Any, TypedDict
 from urllib.parse import parse_qs, urlparse
-
+from collections.abc import Sequence
+import ffmpeg
+import static_ffmpeg
+# NOTE the only reason this module is imported here is so we can
+# annotate the return value of the _get_voice_converter function.
+from ultimate_rvc.rvc.infer.infer import VoiceConverter
+from ultimate_rvc.typing_extra import Json, StrPath
 import gradio as gr
 import lazy_loader as lazy
 import typer