Cant get to isntall eOS on my Oneplus 6

Fix Failed to Boot into Userspace Fastboot, One or more fastboot_ error_ failed to identify current slot Read-only The current status of the FRU object in the slot fruObjectNum 5 - Error status 6 fastboot_ error_ failed to identify current slot >fastboot flash boot magisk_ fastboot: error: Failed to identify current slot >fastboot flash boot magisk_ fastboot

fastboot change slot failed ) error while executing ADB Fastboot Commands failed (Too