The error message “Guid.NewGuid.toString is not a function” is indicating that the JavaScript code is trying to call the toString() method on the Guid.NewGuid object, but Guid.NewGuid is not an object that has a toString() method.
In JavaScript, the Guid object is not a built-in object, it is either a custom object or a part of a library that is being used in the code. .NewGuid is a static method that generates a new globally unique identifier (GUID) and it should be called as a function like Guid.NewGuid() and the returned value is a guid object that doesn’t have a toString() method.
You can resolve this issue by making sure that the Guid object is correctly imported or defined, and calling the Guid.NewGuid() method to get a new guid, then call the toString() method on that returned value.
For example, if the code is :
let newGUID = Guid.NewGuid.toString();change it to
let newGUID = Guid.NewGuid().toString();Also, make sure that you have the correct library/library version that has the Guid object defined in it.