Very unclear error I encountered: "identifier .Hnd-div cannot be found"

[BrendanMesters]

So, I'm writing a code analyzer in koka and all of the sudden, after a bit of code rewriting, the following error (internal-struct.kk(37,10): error: identifier .Hnd-div cannot be found) is thrown by my compiler...

This error started when I defined my effect as a rec effect name as opposed to effect name (I was playing around with using recursive effects).

The internal-struct.kk(37,10) refers to the 'h' of handler in the line with handler.

improvement of this error message would be much appreciated as its very unclear what is going wrong.

---

Code in question:

rec effect scope
    fun get(name: string) : expression
    fun add(name: string, value: expression) : ()
    fun get_scope_repr() : list<(string, expression)>
    
fun scope_handeler( fun_to_exec: () -> <scope,exn|e> a) : <exn|e> a
    var scopeState : list<(string, expression)> := Nil
    // The error pointed to the following line.
    with handler
        fun get(name) 
            ...
        fun add(name: string, elem: expression) 
            ...
        fun get_scope_repr()
            ...
    fun_to_exec()