I am using Umbraco 8, v.8.11.1, and am trying to extend the Umbraco database with my own table. I have followed this guide here in the documentation:

https://our.umbraco.com/documentation/extending/database/

On this code line, inside the Migrate method, it breaks:

Create.Table<BlogCommentSchema>().Do();

Here is the error message:

Create = 'Create' threw an exception of type 'Umbraco.Core.Migrations.IncompleteMigrationExpressionException'    
Umbraco.Core.Migrations.IncompleteMigrationExpressionException: 'Cannot create a new expression: the previous expression has not run.'

In the documentation for this error, found here:

https://our.umbraco.com/apidocs/v8/csharp/api/Umbraco.Core.Migrations.IncompleteMigrationExpressionException.html

it says:

"Remarks

Migration expressions such as Alter.Table(...).Do() must end with Do(), else they are not executed. When a non-executed expression is detected, an IncompleteMigrationExpressionException is thrown."

I assume this has something to do with it, but it makes no sense since the code ends with a Do();

Create.Table<BlogCommentSchema>().Do();

I have also tried some adjustments to the code, mainly following this guide, with no change:

https://our.umbraco.com/forum/umbraco-8/98439-create-custom-database-table-in-umbraco-8

I have tried exchanging the database sdf file in App_Data to the initial "clean" Umbraco database sdf which I had a backup of, but this made no difference either.

As I understand it there is no need to install any packages to be able to use Migrations.