Redmi 6a nvdata mount problem bootloop - Xiaomi Redmi 6A Questions & Answers

Hi Guys i have a Redmi 6a and i familiar with android developing and i did flash custom \ stock roms and i rooted my phone with magisk succesfully many times and i'd use xposed too BUT last night i faced with a wierd problem that i can not find any solution about that
my phone was updated to the last version of global rom miui 11.0.7
i downloaded a kernel named Miui speed mod 1.19 and in the comments i did'nt find any feedback that it may cause problem
when i flashed that kernel , there is showing a message : Failed to mount '/nvdata' (Invalid argument) and the device got bootloop
and wiping partitions and changing partition's format did not solve it and I had no idea theres a partition named nvdata that is
Necessary mount to boot
I tried to flash the current version recovery firmware through TWRP but again in mount section i can not enable nvdata
i also downloaded latest fastboot firmware and flashed with fastboot with stuck recovery i wiped but the device still stuck in mi second boot screen
flashing custom pixel experience rom either did'nt work out and devcie stuck at google logo
in file manager of twrp the folder of nvdata is empty ,
Link of kernel that i flashed : https://forum.xda-developers.com/redmi-note-2/development/kernel-miui-v7-1-init-d-support-t3285769
Please Give me a solution that i can recover my phone (( i feel blue Do you think the problem is hardware? if it's , is it from emmc ?
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