Flashing avb_custom_key fails
Flashing a new avb_custom_key fails on my Pixel 3 when there already is one:
Sending 'avb_custom_key' (0 KB) OKAY [ 0.120s]
Writing 'avb_custom_key' FAILED (remote: 'Failed flash avb custom key Device Error')
You have to erase the partition before flashing a new one, patch attached.