How to use localStorage?

I need to connect localStorage to remember the user's actions.
But I get an error
`Uncaught DOMException: Failed to read the 'localStorage' property from 'Window': The document is sandboxed and lacks the 'allow-same-origin' flag.`
We can bypass or add **allow-same-origin**?

Start by locating the browser sandbox and embedded-site handling related to the reported localStorage access. Reproduce the DOMException, then trace how sandbox flags are configured and whether localStorage is used elsewhere. Done means the issue has a documented or implemented resolution that preserves the intended security boundary.

Written by the indexing model from the issue text.