check-version error

[OberstVonGatow]

Hi, maybe I'm doing something wrong because I'm pretty new to nodejs.
I tried using the collmex-client with import instead of required:

import Collmex from 'collmex-client';

const collmex = Collmex({
    User: 'XXX',
    Password: 'XXXX',
    CMXKundennummer: XXXXX,
    Firma_Nr: 1,
    Systemname: 'collmex-test'
});

I get an error

Uncaught TypeError: Cannot read properties of null (reading 'toString')

in check-version.js line 9:
const npmData = JSON.parse(spawnSync('npm', ['view', pkgName, '--json']).stdout.toString())

If i remove the checkVersion() call everything works for me