HTTP/1xx (Informational)
100 Continue
Indicates that the initial part of a request has been received and the client should proceed with the rest of the request.
❓ Why does this happen?
Commonly used with Expect: 100-continue headers when uploading large payloads so the client verifies server acceptance before sending body data.
✅ How to fix it
No fix needed under normal conditions; if unexpected, verify whether your HTTP client is sending an Expect header.