Exception:

Unable to connect to server: timeout expired

Resolution:

1. Make sure the Database is Publicly accessible by using the Modify button.

2. In “Connectivity & security” section, click the “VPC security groups”.

3. Select “Inbound rules” tab.

4. Click “Edit Inbound rules” button.

5. Click “Add rule” button.

6. For “Type”, select “PostgreSQL”. For “Source”, select “Anywhere-IPv4”.

7. Click “Save rules” button.