TWRP Error 7, show Storage Internal 0 MB. Please help, wrote full description

im using ASUS Zenfone 5 as my daily driver since it was came out. before everything screwed up, im using XOSP 6.3 it was stable, but recently bugging. first time i unlock bootloader with ASUS official unlocker. My history of custom rom are CM12, Ressurection Remix LP, DirtyUnicorn, Cleanstock, XOSP. long short story. im trying tanks0412's stable Ressurection Remix, follow the precise of the instruction which is wiping System, dalvik, cache, data and internal. wiping internal which leads me to this problem, this problem has been occured 1-2 times when i did it and i succesfully fix it by flashing RR LP or somehow it fixed. but this time, it wont. its been 3 days.
- it shows error 7 when flash rom, tried to remove asserts line in the rom. wont work
- TWRP shows internal storage 0 MB. tried to remount system with terminal. wont work
- tried to update TWRP, flashing via flashboot. wont work
- tried to downgrade TWRP to 2.8.7.0 with Zenfone Asist. wont work
- tried to flash CM13.1 system image with Zenfone Asist. says okay, everything fine in bootloader. reboot to recovery, says no os installed. Cant boot to system.

Device info =
ASUS Zenfone 5
- 8 GB internal storage
- 32 GB external storage
- 2 GB RAM
- ASUS T00J/F (i forgot)
- A500CG
- TWRP 3.0.M2-0

this is my first thread. correct me if im wrong

PLEASE HELP:(:crying: