Quite a bit of that is recorded here [CUSTOM BUILD] Oneplus One - bacon Android 11 v1.13-r CUSTOM_SLIM with No Advanced Privacy - #13 by aibd. found or created in (equivalent of)
/device/oneplus/bacon/vendorsetup.sh
Be sure to save your corrected local_manifest !
You error.log shows a slightly smaller space diff than bacon (check Space and size in my bacon posts). If you have the device running you can do an adb shell df -h / Please look up the correct use of adb shell I might include some typo !