add back api key

app.py

@@ -3,10 +3,10 @@ import gradio as gr
 import numpy as np
 
 
-io1 = gr.Interface.load("huggingface/facebook/xm_transformer_s2ut_en-hk")
-io2 = gr.Interface.load("huggingface/facebook/xm_transformer_s2ut_hk-en")
-io3 = gr.Interface.load("huggingface/facebook/xm_transformer_unity_en-hk")
-io4 = gr.Interface.load("huggingface/facebook/xm_transformer_unity_hk-en")
+io1 = gr.Interface.load("huggingface/facebook/xm_transformer_s2ut_en-hk", api_key=os.environ['api_key'])
+io2 = gr.Interface.load("huggingface/facebook/xm_transformer_s2ut_hk-en", api_key=os.environ['api_key'])
+io3 = gr.Interface.load("huggingface/facebook/xm_transformer_unity_en-hk", api_key=os.environ['api_key'])
+io4 = gr.Interface.load("huggingface/facebook/xm_transformer_unity_hk-en", api_key=os.environ['api_key'])
    
 def inference(audio, model):
     if model == "xm_transformer_s2ut_en-hk":