thanks for the log.1) I attach the debug log, same error today.
4) Pixel phones don't have exchangeable battery
(I dono howto exit download-mode without pulling the battery,,, and my Power-bottom i quirky, -doesn't respond sometimes)
pls use the upload button in SALT and if that does not work a paste service next time.
reg the issue itself: use the internal storage method instead. See the OP "OK enough about all this: LETS UNLEASH YOUR DEVICE!" -> step 3
re the removable battery: all devices without a removable battery have a key combo to hard reset the device. For several devices I own it is long (10s) pressing Power + "Vol up" but it might be different on yours ofc.