JQuery Error failed to load custom fields

Expected Behavior

I have assigned custom fieldset to all asset models. When I create a new Asset and select asset model, fields assigned to that asset model should be populate automatically.

Actual Behavior

When I am going to create a new Asset and select the asset model, custom fields assigned to that asset Model are not populating automatically. When I inspect the page I found Error in JQuery due to two different web address. "itam" is the one that i have created in my DNS where as "invserver" is my server name (Screen shot is attached).

Please help how can I replace "invserver" from "itam"

error

Please confirm you have done the following before posting your bug report:

[ ] I have enabled debug mode
[ ] I have read checked the Common Issues page

Please provide answers to these questions before posting your bug report:

Version of Snipe-IT you're running - Version 3.6
What OS and web server you're running Snipe-IT on - Windows Server 2012 R2 with IIS and PHP
What method you used to install Snipe-IT (install.sh, manual installation, docker, etc)
WITH DEBUG TURNED ON, if you're getting an error in your browser, include that error
What specific Snipe-IT page you're on, and what specific element you're interacting with to trigger the error
If a stacktrace is provided in the error, include that too.
Any errors that appear in your browser's error console.
Confirm whether the error is reproduceable on the demo.
Include any additional information you can find in app/storage/logs and your webserver's logs.
Include what you've done so far in the installation, and if you got any error messages along the way.
Indicate whether or not you've manually edited any data directly in the database

snipe / snipe-it