8.0 Wpckg mix watch not working

npm run watch

Result;

> @ watch /home/retaria.com/blog
> mix watch

Invalid regular expression: /(\p{Uppercase_Letter}+|\p{Lowercase_Letter}|\d)(\p{Uppercase_Letter}+)/: Invalid escape
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ watch: `mix watch`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @ watch script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2021-01-25T18_01_41_949Z-debug.log

package.json

{
    "private": true,
    "scripts": {
        "dev": "npm run development",
        "development": "mix",
        "watch": "mix watch",
        "watch-poll": "mix watch -- --watch-options-poll=1000",
        "hot": "mix watch --hot",
        "prod": "npm run production",
        "production": "mix --production"
    },
    "devDependencies": {
        "axios": "^0.21",
        "laravel-mix": "^6.0.6",
        "lodash": "^4.17.19",
        "postcss": "^8.1.14"
    }
}

//node
v8.17.0

//npm
6.14.11

Can you understand what the problem is ?