Update app.py

app.py

@@ -137,8 +137,12 @@ def compare_models(models: List[str], img: Image.Image, threshold: float, custom
         except Exception as e:
             # show blank slate if model unavailable
             results.append(Image.new("RGB", img.size, (40, 40, 40)))
-            err = str(e).split("\n")[0][:120]  # shorten
-            legends[m] = f"ERROR: {err}"
+                            err_msg = str(e)
+            # Normalize common weight‑missing errors for clarity
+            if "No such file or directory" in err_msg:
+                legends[m] = "Unavailable (weights not found)"
+            else:
+                legends[m] = f"ERROR: {err_msg.splitlines()[0][:120]}"
 
     return results, legends