Strange message 'Editor placeholder in source file' when using closure in Swift

Question

I have created an method with an closure that is used to fetch data by an AJax request, parse it and convert it to an struct:

static func getAllByCategory(category : String, completion : @escaping ([MenuItem]) -> Void) -> Void {

The category is needed to define from which category the menu items needs to be fetched.

The implementation is according Swift ok. But when i tried to call this method, Swift gives an strange error: 'Editor placeholder in source file' when adding the category in this call:

MenuData.getAllByCategory(category: self.selectedCategory) { (menuItem) in

}

In the documentation Swift gives an example that looks exactly the same. What did i do wrong?

Thanks!

Answer 1

I did something stupid. Compiler gives error on an automatic piece called code . Error popup shows up on parameter but is caused in content. Problem solved.