# CRM CARD RESPONSE\_DESERIALIZATION\_ERROR

**URL:** <https://community.hubspot.com/t/crm-card-response-deserialization-error/20775>\
**Category:** APIs & Integrations\
**Tags:** developer-tools\
**Created:** [May 12, 2020, 9:41am UTC](https://community.hubspot.com/t/crm-card-response-deserialization-error/20775 "2020-05-12T09:41:11Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![SamKreeke](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/samkreeke/32/84489_2.png) [@SamKreeke](https://community.hubspot.com/u/SamKreeke)\
**Post date:** [May 12, 2020, 9:41am UTC](https://community.hubspot.com/t/crm-card-response-deserialization-error/20775/1 "2020-05-12T09:41:11Z")

</div>

Hi there!

I’m trying to show some data from my external application in a CRM card on contact level. HubSpot retrieves my response, but can’t parse it for some reason.

I have the following error:

 ![Screenshot 2020-05-12 at 12.10.06 PM.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/c/2/c299620ac2889f88be153753bcea16d98fd4d14f.png)

The following image is my response:

 ![Screenshot 2020-05-12 at 11.37.01 AM.png](https://d2qpr2jzcazej7.cloudfront.net/original/2X/8/81c22ef49ac7f745ad06345ced897cbbf86b2d19.png)  
I’ve also tried:

`"link": null,`

And:

`"link": "null",`

And even removing **link** completely.

**Does anyone know what the problem might be? If you need more information let me know!**

**NOTE:** I’m using a plugin that adds style to the JSON when viewing it, that’s why it looks like that. I’ve also ran it though [jsonlint.com](http://jsonlint.com), there should be nothing wrong with the format.

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<div class="post-metadata">

**Author:** ![SamKreeke](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/samkreeke/32/84489_2.png) [@SamKreeke](https://community.hubspot.com/u/SamKreeke)\
**Post date:** [May 12, 2020, 12:15pm UTC](https://community.hubspot.com/t/crm-card-response-deserialization-error/20775/2 "2020-05-12T12:15:32Z")

</div>

Ok so I found the solution myself  
 ![16x16_smiley-tongue.png.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/9/e/9ee85ed32f43bd1e26f190560e13ba27d75117cd.png)

It was because my **objectId** and **link** must’ve been:

`"objectId": integer,"link": null,`