BUG #16488: psql installation initdb

The following bug has been logged on the website:

Bug reference:      16488
Logged by:          Dadoz nights
Email address:      spacexnasafbi@gmail.com
PostgreSQL version: 12.3
Operating system:   blackarch linux
Description:

hello
pleas help i have  been talking to archlinux they dont want even help and
the blackarch community says its the arch linux problem go to there support
so now i am here because this is the last choice i dont have any choices i
have been  5 days in this problem  and still in it . 

when i type this command this happens :  initdb --locale en_US.UTF-8 -D
/var/lib/postgres/data/data


/usr/bin/postgres: error while loading shared libraries: libicui18n.so.67:
cannot open shared object file: No such file or directory
no data was returned by command ""/usr/bin/postgres" -V"
initdb: error: The program "postgres" is needed by initdb but was not found
in the
same directory as "/usr/bin/initdb".
Check your installation.