It looks like the error is in the second line at
Code:
Exception on DownloadFileTo java.net.ConnectException: failed to connect to /192.168.0.1 (Port 51268): connect failed: ECONNREFUSED
, your screenshot cuts off there so I can't see the command window above it to see if this is the real point of error. Usually in this case, the error is above that.
Usually 192.168.0.1 is the gateway. Now we have an IP Address and a port number that we cannot connect to which tells us there's an issue in network communication. IE: A server is not on, a server is down, a server is running but can't communicate with us, there's no link between the two, they aren't connected to the same network, etc. I suspect this is a configuration issue or an environment one. Maybe something wasn't configured properly in the web server settings.
Since this could be any number of issues, here are some things to try (Note, I would strongly recommend keeping a notepad handy so you can record your default values. This way if you change anything, you can change it back to what it was before you changed it)
1.) First, let's ping to the IP address in question. This will just tell us whether or not we can see the other device.
Open your command prompt as an administrator. Type
Then press enter. If your results say 100% failed, you have no connection to 192.168.0.1. If it says 100% success, you have a connection and we can rule that out as an issue.
2.) Look at your webserver settings in your preferences. Do you have a slash before 192.168.0.1? Is your local IP range 192.168.0.1? Or is it 192.168.1.0? You can follow this guide to find your IP
http://help.yoyogames.com/hc/en-us/articles/216754688-How-To-Find-My-IP
3.) Write down the IP Address from your webserver preferences (Just in case these steps create unwanted results, we'll have something to fall back to.) You could try to set it to your PC's IPv4. You can also try the loopback address in your game's settings. (127.0.0.1). In your webserver settings, you can also try making sure it reads 192.168.1.0/24, don't know if it will make a difference or not but couldn't hurt to make sure all of your settings are correct.
4.) Check your computer firewall rules. Are inbound/outbound connections allowed? Are you able to check if local connections are allowed?
5.) Since the IP address in the command prompt window is typically a Gateway IP address, log in to your router and check your router's firewall. Is it allowing connections? Are either firewalls using port 51268 for a different process?