React Router Not Installing

I have never had issues installing react router before and I’m not sure what is up. I updated to the latest stable npm version today and it still won’t work.

when I run: "npm install --save react-router"

I get:

added 12 packages, and audited 1978 packages in 3s

125 packages are looking for funding
  run `npm fund` for details

3 high severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force

and when I run: "npm audit fix --force"

I get:

npm ERR! code ERR_INVALID_ARG_TYPE npm ERR! The "from" argument must
be of type string. Received undefined"(among other things)

Any ideas?

Source: React Router Questions