DB-CONNECTION-ERROR: Failed to connect to pgsql

[anandsaini18]

username_changed@gcp12345:/proj/pgMig/src/appldb$ pgloader appldb.load
KABOOM!
DB-CONNECTION-ERROR: Failed to connect to pgsql at "10.10.115.200"(changed due to security reasons) (port 5432) as user "USER": The value
NIL
is not of type
STRING
when binding STRING
An unhandled error condition has been signalled

Config file contains :
LOAD DATABASE
FROM mssql://username@IT1234.hosts.cloud.com/db_name
INTO pgsql://username@10.10.115.200:5432/db_name?sslmode=require