ngentest: Getting error when trying to generate unit test

I used the following command on a component and a guard file

ngentest some-guard.guard.ts

I got the following response

Error [ERR_REQUIRE_ESM]: require() of ES Module /Users/myuser/Code/app/node_modules/@angular/core/fesm2015/core.mjs not supported.
Instead change the require of /Users/myuser/Code/app/node_modules/@angular/core/fesm2015/core.mjs to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (<anonymous>:10:16)
    at requireFromString (/usr/local/lib/node_modules/ngentest/node_modules/require-from-string/index.js:28:4)
    at run (/usr/local/lib/node_modules/ngentest/index.js:159:21)
    at Object.<anonymous> (/usr/local/lib/node_modules/ngentest/index.js:228:3) {
  code: 'ERR_REQUIRE_ESM'
}

I’m using the following versions

node: v16.13.1 yarn: 1.22.15