RQT_CLOSE when flashing TWRP into Samsung Galaxy A8 (2018) with Odin

I am trying to flash TWRP into my Samsung Galaxy A8 (2018) based on official instructions from: https://forum.xda-developers.com/galaxy-a8-2018/samsung-galaxy-a8-2018-roms-kernels-recoveries--other-development/recovery-twrp-3-2-2-0-galaxy-a8-2018-t3818201 I have followed the instructions carefully and repeated several times. I initially tried things on linux with adb and heimdall, however heimdall was failing to flash, so I returned back to the exact Windows instructions using Odin3 v3.13.1. When I try to flash twrp-3.4.0-0-jackpotlte.img.tar into my Samsung Galaxy A8 (2018) aka SM-A530F, Odin fails consistently with this log: Added!! Odin engine v(ID:3.1301).. File analysis.. Total Binary size: 35 M SetupConnection.. Initialzation.. Get PIT for mapping.. Firmware update start.. NAND Write Start!! SingleDownload. recovery.img RQT_CLOSE !! Complete(Write) operation failed. All threads completed. (succeed 0 / failed 1) Removed!! I believe my phone is not RMM locked because I see Developer Options in my settings. I tried the process with OEM unlocking enabled and disabled in my phone Dev Options. No success yet. I googled the issue for a few hours, however people mostly report seeing RQT_CLOSE when phone is RMM locked, which I believe is not my case. Maybe this is related to the recent Android update I installed yesterday. Phone software: Android 9 Baseband version: A530FXXUECTH1 Kernel version: - 4.4.111-19323942 - #1 Mon Aug 3 15:36:52 KST 2020 Build number: PPR1.180610.011.A530FXXUECTH2 Security patch level: August 1,2020 Security software verion: - ASKS v3.1.1 Rlease 20200120 - ADP v3.0 Releasae 20191001 - SMR Aug-2020 Release 1 What does RQT_CLOSE actually mean? Could you please help investigate?