Reproduction steps:

1. Open "facebook_test.zip" project
2. Set Build Platform to Facebook Gameroom
3. Import the "facebook-unity-sdk-7.10.0" Unity package file
4. See Assembly error
5. "Edit" -> "Project Settings" -> "Player"
6. Editor hangs for a few seconds and after that, the error disappears

Expected Result: No errors should appear after importing the Unity package
Actual Result: An Assembly error appears after importing the Unity package

Reproduced with: 2017.3.0b4, 2017.2.0f3, 2017.1.2f1, 5.6.4f1

Note:
Make sure you have the Facebook Gameroom support

Initial error:
"error CS1704: An assembly with the same name `Facebook.Unity' has already been imported. Consider removing one of the references or sign the assembly
Library/FacebookSDK/Facebook.Unity.dll (Location of the symbol related to previous error)
Assets/FacebookSDK/Plugins/Facebook.Unity.dll (Location of the symbol related to previous error)

error CS1704: An assembly with the same name `Facebook.Unity.Settings' has already been imported. Consider removing one of the references or sign the assembly
Library/FacebookSDK/Facebook.Unity.Settings.dll (Location of the symbol related to previous error)
Assets/FacebookSDK/Plugins/Settings/Facebook.Unity.Settings.dll (Location of the symbol related to previous error)"

After opening the Player window

2017.2.0f3, 2017.1.2f1, 5.6.4f1:
"NullReferenceException: Object reference not set to an instance of an object"

5.6.4f1:
"FBException: Property <uploadAccessToken> is missing in the current FB SDK"