Preview error

[youngrichu]

I get the below error after changing the theme on Adapt authoring tool :

`command failed: grunt server-build:prod --outputdir=courses\60fea49cb40f4d62785a366d\60ffb1a272506219243d481b\build --theme=60fea584b40f4d62785a3688 --menu=adapt-contrib-boxMenu
[Error: connect ECONNREFUSED 127.0.0.1:443
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1146:16)
] {
errno: -4078,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 443
}
FileError: resource '//fonts.googleapis.com/css?family=Open+Sans:400,300,700' gave this Error:
Error: connect ECONNREFUSED 127.0.0.1:443
in src/theme/60fea584b40f4d62785a3688/less/fonts.less on line 4, column 1:
3
4 @import url(//fonts.googleapis.com/css?family=Open+Sans:400,300,700);
5

Fatal error: FileError: resource '//fonts.googleapis.com/css?family=Open+Sans:400,300,700' gave this Error:
Error: connect ECONNREFUSED 127.0.0.1:443
in src/theme/60fea584b40f4d62785a3688/less/fonts.less on line 4, column 1:
3
4 @import url(//fonts.googleapis.com/css?family=Open+Sans:400,300,700);
5
�
`