DSpace 7.6 with EZProxy: the supplied uri is not ours

[Mohana SP]

Hi team, does anyone have experience with putting their DSpace instance behind EZProxy? 

We get this message in the dspace.log when trying to access it via EZProxy: 

 org.dspace.app.rest.exception.DSpaceApiExceptionControllerAdvice @ Request is invalid or incorrect (status:400 exception: the supplied uri is not ours: <HOST> at: org.dspace.app.rest.utils.Utils.getBaseObjectRestFromUri(Utils.java:1007))

Our current EZProxy config is this:

Option CookiePassThrough
Title DSpace
HTTPHeader -request -process X-XSRF-TOKEN
U https://<HOST>
HJ https://<HOST>
DJ https://<HOST>
Option Cookie

Could it be our EZProxy configurations or something else? Any insights would help! Thank you.