Issue with Regex 101-EN


**Step Number:** `28`
**Step Name:** `Practice: Curly Braces - 1`
**Language:** `en`
**Version:** `v2.25.0`

**User Agent:** 
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36`

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**What is the problem you are experiencing?**The lesson will not advance beyond this step when I hit enter or next.


