Asp.net core mvc code first approach migration issues & fixes| failed executing DbCommand| LTER TABLE DROP COLUMN failed | Cannot find the object “tablename” because it does not exist

Failed executing DbCommand (68ms) [Parameters=[], CommandType=’Text’, CommandTimeout=’30’]

DECLARE @var0 sysname;

SELECT @var0 = [d].[name]

FROM [sys].[default_constraints] [d]

INNER JOIN [sys].[columns] [c] ON [d].[parent_column_id] = [c].[column_id] AND [d].[parent_object_id] = [c].[object_id]

WHERE ([d].[parent_object_id] = OBJECT_ID(N'[tblOrders]’) AND [c].[name] = N’Id’);

IF @var0 IS NOT NULL EXEC(N’ALTER TABLE [tblOrders] DROP CONSTRAINT [‘ + @var0 + ‘];’);

ALTER TABLE [tblOrders] DROP COLUMN [Id];