Error CRM Extensions - Response deserialization error

[gmurghai]

Our CRM extension was working until about 1:12PST.

We are now getting consistent "Response deserialization error"

We have not changed any code today.

This is an example of the simplest response we are sending:

{"primaryAction":{"type":"ACTION_HOOK","httpMethod":"POST","uri":"https:\/\/domain.net\/hubspot\/action?did=1606835444&amt=&cid=&cname=","label":"Create New"}}

I changed the did and the URL domain and action for this post in the message above

[jac]

We are getting the same message "Response deserialization error". Our extension was working until  2/21/2020 10:51:18 AM EST. 

[gmurghai · Accepted solution]

We just figured it out.  I'm thinking there must have been a change on the Hubspot side as we didn't make any changes over here.  They perhaps got more restrictive about the return headers.  

We changed the header in our response to this and it started working again:

Content-Type:

application/json

Good luck let me know if it works for you.

[jac]

Thank you. That solved my issue too.