Moved to a new server, Now it doesn't work

[Tsango240972]

All our sites were moved to a new server, and now the same code doesn't work.

The file_location we are serving is definitly available and can be viewed in a browser but when passed to:
printService.submit({
'type': 'INVOICE',
'url': file_location
});

Nothing prints. No errors either.

Completely screwed up a bunch of sites that rely on it and I;ve spent all day on it and not got a clue what the issue is.

Obviously something to do with new server, a setting maybe?? A security issue??

I get this error in the log

tigerworkshop.webapphardwarebridge.websocketservices.PrinterWebSocketService.onDataReceived() @62 - HTTP Status Code: 301