Reproducing CRAN check unit test issue on Windows: "Error: DLL 'vctrs' not found: maybe not installed for this architecture?"

Question

A CRAN package submission has produced an error running a few of the testthat unit tests and only on the Windows platform:

• https://win-builder.r-project.org/incoming_pretest/nhlapi_0.1.3_20210218_132343/Windows/00check.log
• with the culprit seemingly being: Error: DLL 'vctrs' not found: maybe not installed for this architecture

I cannot reproduce the issue via:

• running on R-Hub where all seems fine: https://builder.r-hub.io/status/nhlapi_0.1.3.tar.gz-c2eabc85c5a54ac1a6ec86b36f958db0
• on my local Windows machine, where all tests also run fine via R CMD check

Can someone recommend a way to debug and resolve these kind of issues?

FWIW: nothing has changed in the tested pieces of code that produce the errors since the last checks which were successful and I have reasonable confidence that the tests should not be failing.

Answer 1

As of Uwe Ligges, this is fixed on CRAN now

https://www.mail-archive.com/r-package-devel@r-project.org/msg06553.html