We are facing issue, the css is not loading in the higher environments and we are getting the message as below. But in the local instance it is working.
Any help on " MIME type ('application/octet-stream') is not a supported stylesheet MIME type, and strict MIME checking is enabled." will be highly appreciated.
I think that this link  could be helpful for your issue.
Seems that is exactly your issue.
 html - Stylesheet not loaded because of MIME-type - Stack Overflow
Let me know.
Just a follow-up, is there any help required on this?
Can you check the browser debugger and check if the CSS is loading, if yes then is the path correct.