Redirect causes 500 error

Hi, I am setting up a folder redirect on my site, but it shows 500 error for me.

The old path: /test/(.*)
The new path: /website?utm_source=1%

But if I remove 1%, change the new path to /website?utm_source=, it works well.

Anything is missing?

It’s %1. All you need :slight_smile:

Ahh! Thanks! It works!