Update app.py

app.py

@@ -475,7 +475,7 @@ def switch_voice(with_voice, WITH_AUDIO,VOICE_COUNTER):
 with gr.Blocks(css=css) as interface:
     VOICE_COUNTER=gr.State(value=0)
     WITH_AUDIO=gr.State(value=1)
-    VOICE_LIMIT=os.environ.get("VOICE_LIMIT") 
+    VOICE_LIMIT=int( os.environ.get("VOICE_LIMIT")  )
 
     with gr.Row():
         drop_char1 = gr.components.Dropdown(CHARACTER_1_CHOICES,label="Character 1",value=CHARACTER_1_CHOICES[0])