Getting an error of Client Protocol Exception while Sending form

I have created an XML and upload it to the local server in ODK Aggregate of Tomcat. Then using the IP of the network, I have used that URL in my ODK collect App and also assign the Username and Password.
It is able to get that XML form using ODK collect App and I have filled the form.
So while sending the form to Aggregate Server, it is giving an error of Client Protocol Exception.
I have tried changing the submission_url. My ODK collect and ODK aggregate, both are up to date.
Can anyone help me??

Your post does not contain enough information for us to help. In general, the best way to get help is to fill out the questions in the pre-filled template that you get when you create a support post. So, with that in mind, can you answer these questions?

1, What are the version numbers of Collect and Aggregate? Up-to-date doesn't mean much because we ship updates frequently.

  1. Have you tried using an empty submission_url in your form design?