Analyzer throws exceptions during build

[ossendorf-at-hoelscher]

Describe the bug
When building our solution I get a couple of exceptions in the build output logs.
112>CSC : warning AD0001: Analyzer 'Csla.Analyzers.EvaluatePropertiesForSimplicityAnalyzer' threw an exception of type 'System.ArgumentNullException' with message 'Value cannot be null.

Version and Platform
CSLA version: 9.0
OS: Windows

Additional context
Doing a build or rebuild all

[ProDInfo]

I have the same error:

CSC : warning AD0001: El analizador "Csla.Analyzers.EvaluatePropertiesForSimplicityAnalyzer" produjo una excepción de tipo "System.ArgumentNullException" con el mensaje "Value cannot be null. (Parameter 'classDeclaration')".

Version and Platform
CSLA version: 9.0
OS: Windows

Additional context
Doing a build or rebuild all

[JurjendeGroot]

I have the same error

warning AD0001: Analyzer 'Csla.Analyzers.EvaluatePropertiesForSimplicityAnalyzer' threw an exception of type 'System.ArgumentNullException' with message 'Value cannot be null.

Version and Platform
CSLA version: 9.0
OS: Windows

Additional context
Doing a build or rebuild all