Errors appear in the Xcode Console when the project is run on iOS.

Steps to reproduce:
1. Open User's attached project
2. Make sure that Scripting Backend is set to IL2CPP and Api Compatibility Level is .NET 2.0
3. Build for iOS
4. Run via Xcode for iOS device

Result: Errors are thrown:
log4net:ERROR Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
System.Configuration.ConfigurationErrorsException: Type 'System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' not found.
at System.Configuration.SectionInfo.CreateInstance () [0x00000] in <filename unknown>:0
at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00000] in <filename unknown>:0
at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00000] in <filename unknown>:0
at System.Configuration.ConfigurationSettings.get_AppSettings () [0x00000] in <filename unknown>:0

Reproduced with: 2017.1.0b1, 5.6.0f3, 5.5.3f1.
Not reproduced with: 5.4.5f1 (corrupted files).

Tested with: iPhone 6S iOS10.3

Note:
Not reproduced with Android (Samsung Galaxy S6 edge) with IL2CPP.
If Scripting Backend is set to Mono, the issue does not appear.