ValidatorException error

[javadev]

Please fix my build:

https://travis-ci.org/javadev/underscore-java/jobs/187104905

[ERROR] Failed to execute goal org.eluder.coveralls:coveralls-maven-plugin:2.2.0:jacoco (default-cli) on project underscore: I/O operation failed: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]

[kaitoy]

I'm having probably the same error in a travis ci build:

[ERROR] Failed to execute goal org.eluder.coveralls:coveralls-maven-plugin:3.1.0:report (default-cli) on project pcap4j: I/O operation failed: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]

As far as I googled, this seems an SSL certificate chain problem. May be an issue in travis ci side.

[trautonen]

At the moment I don't have time to investigate this much further. There seems to be discussion about the certificates at Travis issue tracker too: travis-ci/travis-ci#7094