invalid event envelope

[huiali]

Environment

What version are you running? Etc.
FROM rust:1-alpine3.16
rust version 1.71.0-nightly (7908a1d65 2023-04-17)

sentry = { version = "0.30.0", features = ["profiling","tracing","backtrace","tower"] }
sentry-actix = "0.30.0"
sentry-anyhow = "0.30.0"

actix-web = "4.0.1"

Steps to Reproduce

Initiate a request and occasionally encounter a 400 error as follows:

2023-05-16T11:42:08.461410319Z [sentry] the profile is being dropped because it contains no samples
2023-05-16T11:42:08.472916689Z [sentry] Get response: {"id":"0d760173ee684ba09f56bd2edad17a34"}
2023-05-16T11:42:08.658567898Z [sentry] Get response: {"detail":"invalid event envelope","causes":["invalid item header","unknown variant profile, expected one of event, transaction, security, attachment, form_data, raw_security, unreal_report, user_report, session, sessions, metrics, metric_bucke
ts, client_report at line 1 column 17"]}
2023-05-16T11:42:08.817842160Z [sentry] Get response: {"id":"d7a94f4273bd4b52b2879085218b1063"}
2023-05-16T11:42:13.824410048Z [sentry] the profile is being dropped because it contains no samples
2023-05-16T11:42:13.836741479Z [sentry] Get response: {"id":"99b2ad2368ea44e6be25587fc948d896"}
2023-05-16T11:42:13.877900509Z [sentry] the profile is being dropped because it contains no samples
2023-05-16T11:42:13.889481678Z

This error occurs occasionally

[Swatinem]

invalid item header, unknown variant profile

That looks weird. Are you running an outdated self-hosted sentry by any chance?