Server certificate verification failed. CAfile: none CRLfile: none

I received the following error when I attempted to play the Web Radio stream https://radio.sweetmelodies.tk:8000/stream:

Failed to decode “https://radio.sweetmelodies.tk:8000/stream”; server certificate verification failed.
CAfile: none CRLfile: none: SSL peer certificate or SSH remote key was not
OK

The stream plays correctly in Firefox. I’m running Volumio “System Version: 4.071 Released: Mon Nov 17 16:31:40 UTC 2025”, so the version is very recent, and the certificates are current:
OpenSSL 3.0.17 1 Jul 2025 (Library: OpenSSL 3.0.17 1 Jul 2025)