I encountered this issue a few days ago (see [Funkwhale] A modern, convivial and free music server - #28 by Kit)
Note : The correct version should be 1.2.10~ynh3 and the log says 1.2.10~ynh2 , I’ll tell the maintainer.
The important part of the log is :
2023-04-09 01:04:33,062: DEBUG - ++ wget --tries 3 --no-dns-cache --timeout 900 --no-verbose --output-document=/var/cache/yunohost/download/funkwhale/api 'https://dev.funkwhale.audio/funkwhale/funkwhale/-/jobs/artifacts/1.2.10/download?job=build_api'
2023-04-09 01:04:34,725: DEBUG - + out='2023-04-09 01:04:34 URL:https://dev.funkwhale.audio/funkwhale/funkwhale/-/jobs/158127/artifacts/download [2824481/2824481] -> "/var/cache/yunohost/download/funkwhale/api" [1]'
2023-04-09 01:04:34,725: DEBUG - + sha256sum --check --status
2023-04-09 01:04:34,738: DEBUG - + rm /var/cache/yunohost/download/funkwhale/api
2023-04-09 01:04:34,739: DEBUG - ++ cut '--delimiter= ' --fields=1
2023-04-09 01:04:34,740: DEBUG - ++ sha256sum /var/cache/yunohost/download/funkwhale/api
2023-04-09 01:04:34,743: WARNING - sha256sum: /var/cache/yunohost/download/funkwhale/api: No such file or directory
2023-04-09 01:04:34,744: DEBUG - ++ cut '--delimiter= ' --fields=1
2023-04-09 01:04:34,745: DEBUG - ++ du -hs /var/cache/yunohost/download/funkwhale/api
2023-04-09 01:04:34,748: WARNING - du: cannot access '/var/cache/yunohost/download/funkwhale/api': No such file or directory
2023-04-09 01:04:34,749: DEBUG - + ynh_die '--message=Corrupt source for /var/cache/yunohost/download/funkwhale/api: Expected fc6f54d37993f74e057d1a59438e21b68a8cff1a7f9438415459ede7cf7f09d0 but got (size: ).'