The specified class is invalid. This class was not created. ClassName = aa....aa[, HandlerName = bb....bb]

aa....aa: Class name
The following value is displayed when it exists:
bb....bb: Constructor argument

Description

The specified class (aa....aa) cannot be created either because it is invalid, or security permission to create this class using reflection is not available.

Action

Revise the value of the property key and the security permission.