Fix ERR_OSSL_EVP_UNSUPPORTED issue

[mikaelsvensson]

Bra länktips:

• https://kinsta.com/knowledgebase/err_ossl_evp_unsupported/
• https://answers.netlify.com/t/vue-2-projects-suddenly-fail-building/93616
• https://github.com/vuejs/vue-cli/issues/6770

Snabbfix: Använd Node 16 istället för senaste versionen.