TypeError: t is undefined when addRow() is called

[James]

I have a subgrid within which there is a button to add a row (record).

When the button to add a row is clicked, then the below function is called:

 

function vAddRow(e) {
    var grid = $(e.parentElement.parentElement).data("kendoGrid")
    ;
    parentId = grid.element[0].id.split("-")[2];
    grid.addRow();
    console.log("vet add row");
};

 

When this function is called the console shows the error "TypeError: t is undefined ".  From what I can see this error is triggered from the Kendo source within the "addRow" function.

 

I cannot find anything in the documentation that defines what "T" is within the context of addRow.

 

I don't know how relevant it is but the parent grid has the same functionality and does not encounter an error.

 

Any insight would be great!