Embedded HTML working fine in preview layout but showing blank on Xibo Display

Hi,
I have Xibo 1.6 on ubuntu.I have embedded a javascript for the weather report and time in embedded section in the server.When I see in the preview layout,everything is working fine but when I push the same layout on my Xibo, the xibo screen is not showing anything(blank) .
On the terminal I see a error like this CERT_PKIXVerifyCert for dl.google.com failed err=-8181

In the preview layout, it shows like this

.

While on the xibo display it looks blank

Please help me on this

You really should consider updating your CMS and player to currently supported versions (at least 1.7.9), I appreciate that linux client is not supported at this point (but will be with our new cross-platform player), but we have no sane way to test early 1.6 series with 1.6 beta player that wasn’t touched for years now.