DllNotFoundException on emulator

When running my application on an android device, everything works fine, but when I run it in the emulator, I get this error:

 DllNotFoundException: Unable to load DLL 'AndroidHostExtension': The specified module could not be found.

In the code, I have this:

 [DllImport("AndroidHostExtension")]
 private static extern void unitySetEventCallbackFunction(IntPtr callbackFunction);

The DLL is in the project like this:

I have different files for every architecture:

The emulator has the following settings:

 Nexus_S_API_27 CPU/ABI: Google APIs Intel Atom (x86)
 API level 27

For some reason it just isn't working in the emulator. When the method "unitySetEventCallbackFunction" the error is thrown. I can't figure out why. Does anyone have some guidance? Thanks.