[Python] How to learn Elasticsearch login and password

I'm writing a site on Flask, connected by Elasticsearch, but when I log in to

http: // localhost: 9200


in the browser after connecting to it a window appears with the fields "username" and "password" enter image description here

if I close this window, the following appears on the page:

{"error":{"root_cause":[{"type":"security_exception",
"reason":"missing authentication credentials for REST request [/]",
"header":{"WWW-Authenticate":["Basic realm=\"security\" charset=\"UTF-8\"","ApiKey"]}}],
"type":"security_exception","reason":"missing authentication credentials for REST request [/]",
"header":{"WWW-Authenticate":["Basic realm=\"security\" charset=\"UTF-8\"","ApiKey"]}},"status":401}


and accordingly the connection to Elasticsearch disappears

Where can I find this data to connect?

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