avoid passing None as encoder

api/onnx_web/diffusion/load.py

@@ -179,17 +179,18 @@ def load_pipeline(
             custom_pipeline = None
 
         logger.debug("loading new diffusion pipeline from %s", model)
-        scheduler = scheduler_type.from_pretrained(
-            model,
-            provider=device.ort_provider(),
-            sess_options=device.sess_options(),
-            subfolder="scheduler",
-        )
+        components = {
+            "scheduler": scheduler_type.from_pretrained(
+                model,
+                provider=device.ort_provider(),
+                sess_options=device.sess_options(),
+                subfolder="scheduler",
+            )
+        }
 
-        text_encoder = None
         if inversion is not None:
             logger.debug("loading text encoder from %s", inversion)
-            text_encoder = OnnxRuntimeModel.from_pretrained(
+            components["text_encoder"] = OnnxRuntimeModel.from_pretrained(
                 path.join(inversion, "text_encoder"),
                 provider=device.ort_provider(),
                 sess_options=device.sess_options(),
@@ -202,8 +203,7 @@ def load_pipeline(
             sess_options=device.sess_options(),
             revision="onnx",
             safety_checker=None,
-            scheduler=scheduler,
-            text_encoder=text_encoder,
+            **components,
         )
 
         if not server.show_progress: