See the status code yourself
curl -sS -o /dev/null -w '%{http_code}\n' https://example.com/pathAdd -v to see the full request and response headers.
HTTP 428 Precondition Required
The server requires conditional requests to prevent lost updates.
🔒 Runs locally — your input never leaves this browser tab
- Code
428- Name
- Precondition Required
- Category
- 4xx — Client error
How to fix / what to check
Send If-Match with the resource ETag.