# Can't open project in Water, saying a nullable object must have a value **URL:** https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589 **Category:** Elements **Created:** [June 7, 2019, 1:31am UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589 "2019-06-07T01:31:47Z") **Posts on this page:** 7 **Page:** 1
### Author: ![xiaoguang](https://talk.remobjects.com/letter_avatar_proxy/v4/letter/x/a9a28c/32.png) [@xiaoguang](https://talk.remobjects.com/u/xiaoguang) #### Post date: [June 7, 2019, 1:31am UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/1 "2019-06-07T01:31:47Z")
Hello, I have a Swift project, which reference a [VB.net](http://VB.net) .net standard class project. Opening the swift project in VS 2019 is fine, and works as expect. However, open the same project in Water, fail. ![%E5%9B%BE%E7%89%87](https://talk.remobjects.com/uploads/default/original/2X/3/3aa2e56bc9a08528dcf0c6a1e8d63225efca935c.png) The Chinese words mean a nullable object must have a value. I would like to send you my project for debuging in private. Thanks. ---
### Author: ![mh](https://talk.remobjects.com/user_avatar/talk.remobjects.com/mh/32/18050_2.png) [@mh](https://talk.remobjects.com/u/mh) #### Post date: [June 7, 2019, 2:12am UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/2 "2019-06-07T02:12:34Z")
which build of Water? can i get the solution as a testcase? thanx! ---
### Author: ![xiaoguang](https://talk.remobjects.com/letter_avatar_proxy/v4/letter/x/a9a28c/32.png) [@xiaoguang](https://talk.remobjects.com/u/xiaoguang) #### Post date: [June 7, 2019, 3:23am UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/3 "2019-06-07T03:23:02Z")
Build 2409. Yes, I can send you my solution. What is the email address for me to send? I don’t want to share the project on the forum. ---
### Author: ![mh](https://talk.remobjects.com/user_avatar/talk.remobjects.com/mh/32/18050_2.png) [@mh](https://talk.remobjects.com/u/mh) #### Post date: [June 7, 2019, 11:55am UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/4 "2019-06-07T11:55:18Z")
[mh@remobjects.com](mailto:mh@remobjects.com) would be fine. thanx! ---
### Author: ![xiaoguang](https://talk.remobjects.com/letter_avatar_proxy/v4/letter/x/a9a28c/32.png) [@xiaoguang](https://talk.remobjects.com/u/xiaoguang) #### Post date: [June 7, 2019, 12:12pm UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/5 "2019-06-07T12:12:11Z")
Just now sent, pleae check, thanks ---
### Author: ![mh](https://talk.remobjects.com/user_avatar/talk.remobjects.com/mh/32/18050_2.png) [@mh](https://talk.remobjects.com/u/mh) #### Post date: [June 7, 2019, 3:36pm UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/6 "2019-06-07T15:36:04Z")
Fixed for today’s upcoming build, thanx. ---
### Author: ![xiaoguang](https://talk.remobjects.com/letter_avatar_proxy/v4/letter/x/a9a28c/32.png) [@xiaoguang](https://talk.remobjects.com/u/xiaoguang) #### Post date: [June 7, 2019, 11:53pm UTC](https://talk.remobjects.com/t/cant-open-project-in-water-saying-a-nullable-object-must-have-a-value/19589/7 "2019-06-07T23:53:22Z")
Just tried, the same project can be opened in Water now, thanks. However, in water click debug-run, failed to debug. In VS2019 is OK. ![%E5%9B%BE%E7%89%87](https://talk.remobjects.com/uploads/default/original/2X/2/23663c37ff7200b0c6b212cbb7e7686f1359a390.png) The chinese means: Value can not be null. Parameter name: source