Nobody here is free enough to go through all your code. But the general reason for this error is
1. Misconfiguration of web.config
2. Service is not hosted on the path you are accessing from.

I recommend you to go through your web.config again. That is the most probable reason for error.

Nobody here is free enough to go through all your code. But the general reason for this error is
1. Misconfiguration of web.config
2. Service is not hosted on the path you are accessing from.

I recommend you to go through your web.config again. That is the most probable reason for error.