# \[✔︎ FIXED\] Error when trying to set any relation between apps

**URL:** <https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76>\
**Category:** Bugs & Issues\
**Created:** [January 17, 2019, 2:44pm UTC](https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76 "2019-01-17T14:44:50Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![esuslo](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/esuslo/32/53_2.png) [@esuslo](https://community.fibery.io/u/esuslo)\
**Post date:** [January 17, 2019, 2:44pm UTC](https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76/1 "2019-01-17T14:44:51Z")

</div>

Failed to update app settings

Spec assertion failed nil - failed: uuid? in: [:id] at: [“fibery.object/delete” :id] spec: :events.spec/id

[![](https://us1.discourse-cdn.com/flex020/uploads/fibery/original/2X/6/651e9a8a1582adeb5db9db5e4255a6427ac5a2ad.png) ](https://dl.dropboxusercontent.com/s/n5fuehvtjefsm4h/Screenshot%202019-01-17%2017.41.19.png?dl=0)

---

<div class="post-metadata">

**Author:** ![shotkin](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/shotkin/32/12_2.png) [@shotkin](https://community.fibery.io/u/shotkin)\
**Post date:** [January 18, 2019, 2:49pm UTC](https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76/2 "2019-01-18T14:49:21Z")

</div>

Hello, Eugene!

I failed to reproduce this error situation ☹  
I mean i connected User Story with Project using one to many cardinality successfully .

Can you retry please this action one more time and tell me if it is ok.

Thanks!

p.s. we have bug in logging so i can’t look into error context of your operation. Currently we’ve fixed logging so any errors will be collected on our side with more error context.

---

<div class="post-metadata">

**Author:** ![esuslo](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/esuslo/32/53_2.png) [@esuslo](https://community.fibery.io/u/esuslo)\
**Post date:** [January 21, 2019, 11:41pm UTC](https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76/3 "2019-01-21T23:41:48Z")

</div>

Hey Andrew,

I am still able to reproduce.  
This error happens when I go to Install Apps -\> Configure (on Projects for example) - then choose relation and press Update App.  
However I was able to build same relation via Customize Domain -\> select Project -\> Add field or extension -\> Relation to…

Eugene

---

<div class="post-metadata">

**Author:** ![shotkin](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/shotkin/32/12_2.png) [@shotkin](https://community.fibery.io/u/shotkin)\
**Post date:** [January 22, 2019, 4:45pm UTC](https://community.fibery.io/t/fixed-error-when-trying-to-set-any-relation-between-apps/76/4 "2019-01-22T16:45:06Z")

</div>

Eugene,

fix is in production.

Thank you for detailed explanations and patience!

P.s. I could not reproduce the issue because of prod/dev environment invariant check logic mismatch. Now this mismatch is resolved.

Andrew