Persistant "ReadOnlySpan" namespace error

I have been getting the following errors in the last three updates of 2021.2 BETA and am unable to play or build. Am I able to edit the code to resolve this error? The last functioning BETA for me was 2021.1.6f1

Hi @rik_mf ,

If you’re trying to build for WebGL, this is likely due to this known issue which is currently being investigated: Unity Issue Tracker - "'ReadOnlySpan<>' does not exist in the namespace 'System'" error is thrown when building for WebGL and using Visual Scripting