Cloud builds for WebGL platform fail after installing usim preview package

Hi,
My project needs to build for both webgl and for linux so that I can use the usim functionality. However, after installing the usim package, I can't get past this webgl build bug (on the developer cloud), despite pragma city:
View attachment 706932
I have got #ifdef !UNITY_WEBGL around all of my unity simulation using statements and usim code.

I'm definitely not a package manager expert, so I'm hoping there's some simple place I can type "when building for webgl, please ignore this package". I've googled around for an hour or so with no luck, so I thought you guys could help me.

Thanks in advance!
-Io

 

Please see this thread for resolution of this issue: https://forum.unity.com/threads/cant-build-for-webgl-after-installing-usim.978465/