I’m afraid I’m not really sure what’s going on. Can you set the font in the Customizer and save? Right now there’s a call to Google happening, but no actual font set. Not sure what would cause that – could be some sort of conflict.
Could you please show my attached file to GeneratePress. Inform them that once you switch your theme to twenty seventeen this error is not present.
This is the one causing your fonts not to show.