Cloudflare durable objects instrumentation throwing `The RPC receiver does not implement the method "METHOD_NAME` error

[AbhiPrasad]

On the new version, we are now getting the error: The RPC receiver does not implement the method "METHOD_NAME". This appears locally and in production. See: cloudflare/workerd#4499

Originally posted by @jczstudios in #16786

[linear]

JS-764 Cloudflare durable objects instrumentation throwing `The RPC receiver does not implement the method "METHOD_NAME` error

[andycrum]

This breaks our Cloudflare Workflows in production. It's a pretty critical issue.

[andreiborza]

Hi, thanks for chiming in. We'll take a closer look.

[demosjarco]

I was having the same issue, but @sentry/cloudflare 9.43.0 seems to fix it
I take that back, it was a false positive. Error still happens on the newest version.
Confirmed, bypassing instrumentDurableObjectWithSentry() and exporting the DO object directly mitigates, although Sentry capabilities are lost.
Rolling back to 9.39.0 allows you to still use sentry without the issue

Versions affected are 9.40.0, 9.41.0, 9.42.0, 9.42.1, 9.43.0.