Add handling text prompt input only logic

handler.py

@@ -31,10 +31,12 @@ class EndpointHandler:
         Return:
             A :obj:`dict`:. base64 encoded image
         """
-        prompts = data.pop("prompts", None)
+        prompts = data.pop("inputs", None)
         encoded_image = data.pop("image", None)
-        init_image = decode_base64_image(encoded_image)
-        init_image.thumbnail((768, 768))
+        init_image = None
+        if encoded_image:
+            init_image = decode_base64_image(encoded_image)
+            init_image.thumbnail((768, 768))
         image = self.pipe(prompts, init_image=init_image).images[0]
 
         # encode image as base 64