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# Configuration Error - CodeDom

YSOD with reference to CodeDom

![](https://4182918922-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MLIxsxy-PG49XtZX5uS%2Fuploads%2FGhF6qoPkfyjaxEsSHouS%2Fimage.png?alt=media\&token=f1ea26ee-fdb6-4878-9ee9-bbf0d852f033)

This is usually due to your connectionstring being wonky!