Hi Qingyun,

qy.tao--- via Bug reports for GNU Guix <bug-guix@gnu.org> writes:

>   1. &store-protocol-error:
>       message: "`/gnu/store/5kj8lyybjrdl7xd0fx9g9vzkz8sklqsy-guix-1.4.0/bin/guix substitute' died unexpectedly"
>       status: 1

This seems to be a transient substitute error, can you retry?

Best,
-- 
Josselin Poiret