Sanity check: don't try to load LoRas if there are none to load

runner/app/pipelines/util.py

@@ -140,6 +140,9 @@ def load_loras(pipeline: any, requested_loras: str):
         pipeline: Diffusion pipeline, usually available under self.ldm.
         loras: JSON string with key-value pairs, where the key is the repository to load LoRas from and the value is the strength (float with a minimum value of 0.0) to assign to the LoRa.
     """
+    # No LoRas to load
+    if requested_loras == "" or requested_loras == None:
+        return;
     # Parse LoRas param as JSON to extract key-value pairs
     loras = json.loads(requested_loras)
     # Build a list of adapter names and their requested strength