Puppeteer VUE JS problems with HTTPS

I have a problem with executing tests served from NODE

net::ERR_CONNECTION_REFUSED at https://localhost:8087
at navigate (node_modules/puppeteer/src/common/FrameManager.ts:190:13)

Test Suites: 2 failed, 2 total
Tests:       7 failed, 7 total
Snapshots:   0 total
Time:        5.093s
Ran all test suites.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! dsf-frontend@0.1.0 test:e2e: `vue-cli-service test:unit -c jest.e2e.config.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the dsf-frontend@0.1.0 test:e2e 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!     /home/xxxxxx/.npm/_logs/2021-04-13T10_41_31_417Z-debug.log