# Room creation with API, SDK issue

**URL:** <https://community.sendbird.com/t/room-creation-with-api-sdk-issue/2714>\
**Category:** iOS\
**Tags:** group-channel, ios\
**Created:** [July 22, 2021, 6:55am UTC](https://community.sendbird.com/t/room-creation-with-api-sdk-issue/2714 "2021-07-22T06:55:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mykhailo\_Bontar](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/mykhailo_bontar/32/1424_2.png) [@Mykhailo\_Bontar](https://community.sendbird.com/u/Mykhailo_Bontar)\
**Post date:** [July 22, 2021, 6:55am UTC](https://community.sendbird.com/t/room-creation-with-api-sdk-issue/2714/1 "2021-07-22T06:55:56Z")

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Hi, i am creating Group Calls room on server side, and passing only one parameter `type`

> **[Group call | Calls Platform API | Sendbird Docs](https://sendbird.com/docs/calls/v1/platform-api/guides/group-call#2-create-a-room)**
>
> Learn how to manage group calls with Calls Platform API.

after that i’m trying to fetch room inside IOS application, using this method:  
on `SendBirdCall.fetchRoom(by: "id")`  
and receive error:  
_(MalformedData 1800208 The data format of the response is invalid.)_  
when i create room on server side, i can not add `created_by`,  
on IOS Room can not be initialized because `createdBy` i `null`  
can you please help me please with this issue?

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**Author:** ![mininny](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/mininny/32/305_2.png) [@mininny](https://community.sendbird.com/u/mininny)\
**Post date:** [July 28, 2021, 8:02am UTC](https://community.sendbird.com/t/room-creation-with-api-sdk-issue/2714/2 "2021-07-28T08:02:01Z")

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Hello @Mykhailo_Bontar , thanks for reaching out!  
We fixed the bug that caused this issue yesterday. Can you please try again and check if it works?

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<div class="post-metadata">

**Author:** ![Mykhailo\_Bontar](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/mykhailo_bontar/32/1424_2.png) [@Mykhailo\_Bontar](https://community.sendbird.com/u/Mykhailo_Bontar)\
**Post date:** [July 28, 2021, 8:18am UTC](https://community.sendbird.com/t/room-creation-with-api-sdk-issue/2714/3 "2021-07-28T08:18:57Z")

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it’s working, thanks 🙂