Update app.py

app.py

@@ -109,23 +109,28 @@ def run_lora(prompt, lora_strings_json,  cfg_scale, steps, randomize_seed, seed,
             lora_configs = json.loads(lora_strings_json)
         except:
             lora_configs = None
+            print("parse lora config json failed")
+            
     if lora_configs:
         with calculateDuration("Loading LoRA weights"):
-            pipe.unload_lora_weights()
+            active_adapters = pipe.get_active_adapters()
             adapter_names = []
             adapter_weights = []
             for lora_info in lora_configs:
-                    lora_repo = lora_info.get("repo")
-                    weights = lora_info.get("weights")
-                    adapter_name = lora_info.get("adapter_name")
-                    adapter_weight = lora_info.get("adapter_weight")
-                    if lora_repo and weights and adapter_name:
-                        # load lora
-                        pipe.load_lora_weights(lora_repo, weight_name=weights, adapter_name=adapter_name)
-                        adapter_names.append(adapter_name)
-                        adapter_weights.append(adapter_weight)
+                lora_repo = lora_info.get("repo")
+                weights = lora_info.get("weights")
+                adapter_name = lora_info.get("adapter_name")
+                adapter_weight = lora_info.get("adapter_weight")
+                if adapter_name in active_adapters:
+                    continue
+                if lora_repo and weights and adapter_name:
+                    # load lora
+                    pipe.load_lora_weights(lora_repo, weight_name=weights, adapter_name=adapter_name)
+                    adapter_names.append(adapter_name)
+                    adapter_weights.append(adapter_weight)
             # set lora weights
-            pipe.set_adapters(adapter_names, adapter_weights=adapter_weights)
+            if len(adapter_names) > 0:
+                pipe.set_adapters(adapter_names, adapter_weights=adapter_weights)
     
     # Set random seed for reproducibility
     if randomize_seed: