Please note that there is a draft policy of the requirements around seeding of snaps on Ubuntu images, which applies to flavors as well https://wiki.ubuntu.com/UbuntuSeededSnaps
The UbuntuKylin team should assure themselves that these requirements are met.
Note in particular if the chromium snap does not have the set of channels required by this policy the image will still fail to build.
The debdiff looks fine, sponsoring.
Please note that there is a draft policy of the requirements around seeding of snaps on Ubuntu images, which applies to flavors as well https:/ /wiki.ubuntu. com/UbuntuSeede dSnaps
The UbuntuKylin team should assure themselves that these requirements are met.
Note in particular if the chromium snap does not have the set of channels required by this policy the image will still fail to build.