Why is localhost dropping the connection?

Question

local server

I made a site according to the guide, the database is connected. The server starts successfully on port 5000, but when switching to it, the connection is dropped

PORT=5000
DB_NAME=online_store
DB_USER=postgres
DB_PASSWORD=root
DB_HOST=localhost
DB_PORT=5000

PS There is no understanding what information can help to understand the problem, so ask clarifying questions

Answer 1

Well, yes, using the bowser it is not possible to connect to the database. What did you expect?

Answer 2

Raise the web server ... it will work