Fix bugs about showing error picture when processing model.

app.py

@@ -308,7 +308,7 @@ def process_model(model_id, q_method, use_imatrix, imatrix_q_method, private_rep
 
           return (f'<h1>✅ DONE</h1><br/>Repo: <a href="{new_repo_url}" target="_blank" style="text-decoration:underline">{repo_id}</a>', f"llama{np.random.randint(9)}.png")
     except Exception as e:
-        raise (f'<h1>❌ ERROR</h1><br/><pre style="white-space:pre-wrap;">{escape(str(e))}</pre>', "error.png")
+        return (f'<h1>❌ ERROR</h1><br/><pre style="white-space:pre-wrap;">{escape(str(e))}</pre>', "error.png")
 
 
 css="""/* Custom CSS to allow scrolling */