Error in generated AQL when upserting a generic document about arangoclient.net HOT 7 OPEN

var wrapped = Wrapper.Wrap(key, state);
var result = await db.InsertAsync<Wrapper<TState>>(wrapped)

ArangoDB.Client.ArangoServerException: collection or view not found: Wrapper`1. ErrorNumber: 1203 HttpStatusCode: 404
   at ArangoDB.Client.BaseResultAnalyzer.ThrowIfNeeded(BaseResult baseResult)
   at ArangoDB.Client.Http.HttpCommand.RequestMergedResult[T](Object data)
   at ArangoDB.Client.Collection.ArangoCollection.InsertAsync(Object document, Nullable`1 waitForSync, Action`1 baseResult)
   at ArangoDB.Client.Collection.ArangoCollection`1.InsertAsync(Object document, Nullable`1 waitForSync, Action`1 baseResult)
   at ArangoDB.Client.ArangoDatabase.InsertAsync[T](Object document, Nullable`1 waitForSync, Action`1 baseResult)
   ...

var result = db.Insert<State>(new State());

ArangoDB.Client.ArangoServerException: collection or view not found: State. ErrorNumber: 1203 HttpStatusCode: 404
   at ArangoDB.Client.BaseResultAnalyzer.ThrowIfNeeded(BaseResult baseResult)
   at ArangoDB.Client.Http.HttpCommand.RequestMergedResult[T](Object data)
   at ArangoDB.Client.Collection.ArangoCollection.InsertAsync(Object document, Nullable`1 waitForSync, Action`1 baseResult)
   at ArangoDB.Client.Collection.ArangoCollection`1.InsertAsync(Object document, Nullable`1 waitForSync, Action`1 baseResult)
   at ArangoDB.Client.ArangoDatabase.InsertAsync[T](Object document, Nullable`1 waitForSync, Action`1 baseResult)
   ...

    // insert new document and creates 'Person' collection on the fly
    db.Insert<Person>(person);