E0002: Type error

The Go type checker refused an expression in a .vuka file. Vuka checks the Go it generates with Go's own type checker and reports the error at the place in your source, spelt as you wrote it. The message is Go's.

Wrong

func count(names []string) int {
	return len(names) + "1"
}

Right

func count(names []string) int {
	return len(names) + 1
}