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# Umbraco.ModelsBuilder assembly error

![](https://4182918922-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MLIxsxy-PG49XtZX5uS%2F-MeUNZgrBzOcR844o41f%2F-MeUOHI6gUHgHCuklvCj%2Fumbracoerror.png?alt=media\&token=d889c708-e932-4667-bb75-e008e1374d81)

Do a Package Restore on the solution

Restart Visual Studio

Rebuild project