After upgrading from 3.3.3 to 4.8.1 I'm getting the below error.. Any ideas?
Server Error in '/' Application.
Value cannot be null.
Parameter name: type
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: type
Source Error:
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An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
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Stack Trace:
[ArgumentNullException: Value cannot be null.Parameter name: type] System.Activator.CreateInstance(Type type, Boolean nonPublic) +2797059 DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +582 DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectNamespace, String ObjectAssemblyName) +17 DotNetNuke.Security.Membership.Data.DataProvider.CreateProvider() +38 DotNetNuke.Security.Membership.Data.DataProvider..cctor() +13 [TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.Data.DataProvider' threw an exception.] DotNetNuke.Security.Membership.Data.DataProvider.Instance() +0 DotNetNuke.Security.Membership.AspNetMembershipProvider..cctor() +5 [TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.AspNetMembershipProvider' threw an exception.] [TargetInvocationException: Exception has been thrown by the target of an invocation.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) +0 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) +103 System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) +261 System.Activator.CreateInstance(Type type, Boolean nonPublic) +66 DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +582 DotNetNuke.Security.Membership.MembershipProvider.CreateProvider() +38 DotNetNuke.Security.Membership.MembershipProvider..cctor() +13 [TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.MembershipProvider' threw an exception.] DotNetNuke.Security.Membership.MembershipProvider.Instance() +0 DotNetNuke.Entities.Users.UserController..cctor() +5 [TypeInitializationException: The type initializer for 'DotNetNuke.Entities.Users.UserController' threw an exception.] DotNetNuke.Entities.Users.UserController.GetCurrentUserInfo() +0 DotNetNuke.Services.Exceptions.BasePortalException.InitilizePrivateVariables() +247
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