Trouble with tunnels

I set up a barebones tunnel based on the "get started" page in the docs (https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/get-started/create-local-tunnel/). I routed that through a domain on my account. All steps go fine until cloudflared tunnel run [name], which gives the following error:
2024/06/14 14:58:31 failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 2048 kiB, got: 416 kiB). See https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.
2024-06-14T18:58:31Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.227

This isn't in the troubleshooting section. I tried some different configurations, but I'm specifically interested in making a local webserver accessible via the public hostname. What should I do?
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