Initialize matplotlib backend for Gradio

app.py

@@ -12,6 +12,10 @@ import wave
 from pathlib import Path
 from typing import Any
 
+import matplotlib
+
+matplotlib.use("Agg")
+
 import gradio as gr
 import requests
 import spaces

requirements.txt

@@ -1,6 +1,7 @@
 gradio
 easydict
 huggingface_hub
+matplotlib
 spaces
 requests
 sounddevice