'Having trouble in Connecting exist PostgreSQL in DBeaver

I'm having trouble with connecting my existing PostgreSql Database in DBeaver. This is message I received while connecting...

> Connection to localhost:5432 refused. Check that the hostname and port are correct and that 
  the postmaster is accepting TCP/IP connections.  
> Connection refused: connect   Connection refused: connect

Even though my "pg_hba.config" is working perfectly fine for other Databases



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