Bug Transport layer build crash

I was following the minimal server and client guide for the transport layer:
https://docs.unity3d.com/Packages/com.unity.transport@0.3/manual/workflow-client-server.html

Everything works fine in the editor, but the build crashes. The crash log has some weird errors:
Player.txt

There are some "Unable to load" errors, I'm wondering if it's a permission issue, since the project is in the documents folder.

 

Code (Boo):

1. Failed to load 'C:/Users/David/OneDrive/Documents/Unity/Builds/2D Multiplayer/2D Multiplayer_Data/Plugins\x86/network.bindings.dll', expected x86 architecture, but was x64 architecture. You must recompile your plugin for x86 architecture.

you need to compile 2 versions of the plugin

for 64-bit and 32-bit

 

How would I do that?

 

The github has the source code for the network.bindings