Checking Android's Currently Active Partition Slot

Mi11Lite5G loops into fastboot after install fastboot set active slot --slot SLOT Use SLOT; 'all' for both slots, 'other' for non-current slot --set-active Sets the active slot before fastboot get active slot If it is a slotted device in Fastboot run the command: fastboot getvar current-slot and then set the active slot, fastboot --set-active=

fastboot_ error_ failed to identify current slot But I want without fastboot command My usecase is the bootloader need to check the currect active slot and set the proper suffix How can I