MIME type ('text/html') is not a supported stylesheet MIME type beteween applications

Hello everyone, 

I have an application with BackOffice and I'm doing a proxy to a Portal (other application). 

What happening is, if I have on ServiceCenter (site rules) a rule for this URL with a Root Application defined like "BackOffice", I get the error on console (in attachment) and the file with CSS is not applied. If I change the Root Application to "Portal", I don't have an error and the style is applied. 

There is a way to keep the root application with BackOffice and fix the problem?

Thanks in advance

Diogo Coelho


Hi Diogo, can you post again the error? When I download, don't show anything

The error is the next one:

Refused to apply style from 'https://....../BackOffice/CustomHandlers/notfound.aspx?' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.


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