Postgresql connection error on installation

Using CentOS 7.3
java-1.8.0-openjdk-1.8.0.322.b06-1.el7_9.x86_64
postgresql 11
Tomcat 9.0.26

Database settings

~~~~~

db.default.driver = org.postgresql.Driver
db.default.ddl = update
db.default.url = jdbc:postgresql://localhost:5432/axelor
db.default.user =
db.default.password =

Received the following on /opt/tomcat/logs/catalina.out .

2022-03-01 17:17:32.055 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Searching for entity classes…
2022-03-01 17:18:34.110 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Entity classes found: 578
2022-03-01 17:18:34.133 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Searching for repository classes…
2022-03-01 17:18:38.937 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Repository classes found: 724
2022-03-01 17:18:38.938 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Searching for value enum classes…
2022-03-01 17:18:42.139 DEBUG 40374 — [pool-2-thread-1] com.axelor.db.JpaScanner : Value enum classes found: 8
2022-03-01 17:18:52.770 ERROR 40374 — [ main] org.postgresql.Driver : Connection error:
org.postgresql.util.PSQLException: The connection attempt failed.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:275)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
at org.postgresql.jdbc.PgConnection.(PgConnection.java:194)
at org.postgresql.Driver.makeConnection(Driver.java:431)
at org.postgresql.Driver.connect(Driver.java:247)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:95)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:101)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:341)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:506)
at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:105)
at com.zaxxer.hikari.HikariDataSource.(HikariDataSource.java:71)

Does anyone know why it cant connect with my postgresql driver?

Look at this link