This error is logged when the Galaxkey client cannot establish a trust relationship with the server. This happens if there is an SSL inspection proxy in between. SSL inspection proxy is like a 'man in the middle' which provides it's own certificate on behalf of the Galaxkey server. Galaxkey does not allow this.
Once you confirm that you are behind an SSL inspection proxy, please add the following exceptions to it:
Galaxkey can provide the ip address on request. Please contact Galaxkey Support for your requirement.