npm error CERT_UNTRUSTED

[rozanski]

When doing the git push I get the following error:
[main] npm
[main] http
[main] GET https://registry.npmjs.org/say
[main] npm
[main] http
[main] GET
[main] https://registry.npmjs.org/say
[Info] Still Working...
[main] npm http GET
[main] https://registry.npmjs.org/say
[main] npm
[main] ERR!
[main] Error: CERT_UNTRUSTED
[main] npm
[main] ERR!
[main] at SecurePair. (tls.js:1362:32)

Full text in attached file. I am new to balena, all help appreciated!
My device is a Raspberry Pi 3.
I installed balena-sound with pihole on a different SD card so it's generally working. Perhaps git push is no longer supported?

text2-speech-error.txt