sun.security.provider.certpath.SunCertPathBuilderException

I am trying to use the geocode function in the APOC library in neoDash, but when I try to do this I get the error,

Failed to invoke procedure `apoc.spatial.geocodeOnce`: Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

How can I fix this?