EDITABLE GRID IN SECTION Error

Hi,

Can some one help me,

I am using this tutorial for making section grid editable: https://community.creatio.com/articles/editable-grid-section#comment-81…

And I have two errors and it doesn't work.

My errors are: 

-Heading for label "DataGrid" not found.

-Unable to find column by configuration: "{"className":"Terrasoft.ConfigurationGrid","generateControlsConfig":{"bindTo":"generatActiveRowControlsConfig"},"changeRow":{"bindTo":"changeRow"},"unSelectRow":{"bindTo":"unSelectRow"},"onGridClick":{"bindTo":"onGridClick"},"initActiveRowKeyMap":{"bindTo":"initActiveRowKeyMap"},"activeRowAction":{"bindTo":"onActiveRowAction"},"multiSelect":{"bindTo":"MultiSelect"},"name":"DataGrid"}" .