Module not found: Can't resolve 'file-saver' in '/home/node/app/src/reducers'

Question

i ran the installer and returned:

npm install xlsx file-saver

added 10 packages, and audited 15 packages in 13s

1 high severity vulnerability

Some issues need review, and may require choosing a different dependency.

Run `npm audit` for details.

the audit:

npm audit

# npm audit report

xlsx  *
Severity: high
Prototype Pollution in sheetJS - https://github.com/advisories/GHSA-4r6h-8v6p-xvw6
No fix available
node_modules/xlsx

1 high severity vulnerability

Some issues need review, and may require choosing
a different dependency.

the npm update said that is up to date and also added to package.json

 {
  "dependencies": {
    "file-saver": "^2.0.5",
    "redux-devtools-extension": "^2.13.9",
    "xlsx": "^0.18.5"
  }
}

Why is showing this error?