Regarding to these/this Matter.
I already found out the problem it seems the langtype 2018 clients only accepts is 0.
coz' if I tried to use Langtype 1 on a Patched 2018 Client and error occurs ("nil val something")
and it seems the custom clientinfo.xml patch on NEMO doesn't work on 2018 Client.
too much bug and errors on the new clients. if you're planning to release this on public it wont be an advisable decision.
if you want stability use client dates under 2016. as of now I currently tinkering on 2017-05-17 seems less buggy.
Thanks for the Info everyone.