added image typr=numpy

app.py

@@ -8,7 +8,7 @@ def generate_image(text_prompt, init_image):
     api_host = os.getenv('API_HOST', 'https://api.stability.ai')
     url = f"{api_host}/v1alpha/generation/{engine_id}/image-to-image"
 
-    api_key = 'sk-pJ2hAocegVJCVgRYHvhleFaOP6AVTwSrhzsWYucwmrFi8XKS'
+    api_key = os.getenv('stability_ai')
     if api_key is None:
         raise Exception("Missing Stability API key.")
 
@@ -52,6 +52,6 @@ inputs = [
     gr.inputs.Image(label="Image")
 ]
 
-outputs = gr.outputs.Image(label="Generated Image")
+outputs = gr.outputs.Image(type='numpy', label="Generated Image")
 
 gr.Interface(fn=generate_image, inputs=inputs, outputs=outputs).launch(debug=True)