I'm having trouble connecting my Node.js application to PostgreSQL. What should I check?
First, ensure that your PostgreSQL server is running. Then, check your connection string for any errors.
I've verified that the server is running, but I'm still getting a connection error. What next?
Check if the database credentials (username, password) in your connection string are correct.
The credentials are correct. Could it be a firewall issue?
Yes, a firewall could block the connection. Ensure that the PostgreSQL port (default is 5432) is open.
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