While upgrading to dnn community 07.01.01 we are getting the error below...

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Upgrade Now 0:35 Minutes   |   26% ERROR occured - System.Data.SqlClient.SqlException (0x80131904): Column names in each table must be unique. Column name 'Status' in table 'dbo.UserRoles' is specified more than once.
   at System.Data.SqlClient.SqlConnection. (SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
   at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async)
   at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at DotNetNuke.Data.SqlDataProvider.ExecuteScriptInternal(String connectionString, String script)
/* Add new Columns To UserRoles Table *//**************************************/
IF NOT EXISTS (SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME='dbo.UserRoles' AND COLUMN_NAME='Status')
    BEGIN        ALTER TABLE dbo.UserRoles
            ADD [Status] int NOT NULL CONSTRAINT DF_UserRoles_Status DEFAULT 1    END
System.Data.SqlClient.SqlException (0x80131904): Column names in each table must be unique. Column name 'IsOwner' in table 'dbo.UserRoles' is specified more than once.
   at System.Data.SqlClient.SqlConnection. (SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
   at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async)
   at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at DotNetNuke.Data.SqlDataProvider.ExecuteScriptInternal(String connectionString, String script)
IF NOT EXISTS (SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME='dbo.UserRoles' AND COLUMN_NAME='IsOwner')
    BEGIN        ALTER TABLE dbo.UserRoles
            ADD IsOwner bit NOT NULL CONSTRAINT DF_UserRoles_IsOwner DEFAULT 0    END
,Error: Object reference not set to an instance of an object.   at DotNetNuke.Services.Upgrade.Upgrade.ConvertCoreNotificationTypeActionsFor700()
   at DotNetNuke.Services.Upgrade.Upgrade.UpgradeToVersion700()
   at DotNetNuke.Services.Upgrade.Upgrade.UpgradeApplication(String providerPath, Version version, Boolean writeFeedback)
26 %Retry View Logs
Updating Database

 Thanks.