How to reproduce:
1. Open the attached "HB SB Umpire Training Quest.zip" Project
2. Build the project

Expected Behavior: The project builds without errors
Actual Behavior: The project fails to build with Object null reference exception.

Reproducible with: 2019.4.19f1, 2020.2.3f1, 2021.1.0b4, 2021.2.0a3
Could not test with: 2018.4 since the project has a lot of dependencies that break on downgrade

Note:
- Build error piece(full error in the edits): NullReferenceException: Object reference not set to an instance of an object
UnityEditor.AssemblyReferenceChecker.CollectReferencedAndDefinedMethods (Mono.Cecil.TypeDefinition type, System.Boolean isSystem) (at <bef6d2fbef1348939b77102b4cf6a6e6>:0)
- The issue does not reproduce when building windows standalone, only Android
- Could not reproduce on a newly created Project