SSL certificate trust issue

[R0nd]

I'm getting a "Status:-300" message when opening the widget. Found the following exception in device logs:

HTTP FAILED: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

My HASS instance uses a letsencrypt certificate which is valid in browsers.

[R0nd]

My bad, it was a server configuration issue. Had to add SSLCertificateChainFile to apache config.