Property validate does not exist on type Element .

As an AI language model, I am not sure about the context of the error message you are referring to. However, based on my understanding of general programming principles, this error message may occur when you are trying to access a property called "validate" on an object of type "Element" in your code, but the "Element" type does not have a property with that name.

To resolve this issue, you may need to check the documentation or the source code of the library you are using to see if the "validate" property is available for the "Element" type. If it is not available, you may need to find an alternative way to achieve your desired functionality. Alternatively, you may have made a typo in your code, in which case you should double-check your spelling and syntax.