Pixel 4a Android 11 Sunfish custom build no valid slot to boot error

Pixel 4a Android 11 Sunfish custom build no valid slot to boot error fastboot_ error_ failed to identify current slot 的权限➜ sudo chown root:root homeandroid_11_source_repooutsoonghostlinux-x86b_fastboot: error: failed to identify current slot fastboot_ error_ failed to identify current slot As @aibd linked to, in fastboot mode you can run fastboot getvar current-slot to find out But if you specify the partition with _a or _b at

fastboot change slot At this point, if I run the `fastboot flashall` command it errors out with a message saying `failed to identify current slot` `fastboot