Firebase Error

Good afternoon

I have been using Traccar on my own server for some time and using Firebase for push notifications, this has been working nicely.

From today I am receiving error and no push notifications are coming through:

WARN: Firebase notification error - javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target - ProcessingException (...)

Please if any one could assist

Looks like some problem with the SSL certificate verification. Try using a different Java implementation. I recommend the one that is the default for the system you're using.