initdb fails with error

Hi Team,

I find strange behaviour today when initializing the postgres cluster.

Below is the ERROR :

$$>/usr/pgsql-11/bin/initdb -D /data/postgres/pg11/test -d
Running in debug mode.
The files belonging to this database system will be owned by user
"postgres".
This user must also own the server process.

VERSION=11.7
PGDATA=/data/postgres/pg11/test
share_path=/usr/pgsql-11/share
PGPATH=/usr/pgsql-11/bin
POSTGRES_SUPERUSERNAME=postgres
POSTGRES_BKI=/usr/pgsql-11/share/postgres.bki
POSTGRES_DESCR=/usr/pgsql-11/share/postgres.description
POSTGRES_SHDESCR=/usr/pgsql-11/share/postgres.shdescription
POSTGRESQL_CONF_SAMPLE=/usr/pgsql-11/share/postgresql.conf.sample
PG_HBA_SAMPLE=/usr/pgsql-11/share/pg_hba.conf.sample
PG_IDENT_SAMPLE=/usr/pgsql-11/share/pg_ident.conf.sample
The database cluster will be initialized with locale "en_US.UTF-8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

creating directory /data/postgres/pg11/test ... ok
creating subdirectories ... ok
selecting default max_connections ... 20
selecting default shared_buffers ... 400kB
selecting default timezone ... America/Los_Angeles
selecting dynamic shared memory implementation ... posix
creating configuration files ... ok
running bootstrap script ... 2021-09-16 11:42:47.944 GMT [24522] FATAL:
invalid value for parameter "port": ""
child process exited with exit code 1
initdb: removing data directory "/data/postgres/pg11/test"

Any reason why this would be happening?

Thanks,
Nikhil