refused to set unsafe header content-length

I trying to implement a simple JS file in CRM but its throwing "refused to set unsafe header content-length" from the global.ahsx file. and its throwing an unknow error from my file (i assume it has too do with the header error).

I have done some sreaching and nothing seems to solve my issue, If anyone can lend a hand, it would be much appreciated.

Here is a link to the global.ahsx file:

https://tti03.crm.dynamics.com/_common/global.ashx?ver=-2009934990