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 411 Length Required
The server requires a Content-Length header.
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- Code
411- Name
- Length Required
- Category
- 4xx — Client error
How to fix / what to check
Send Content-Length, or use chunked transfer encoding if supported.