Avatar api is not working for one particular issue type(Epic)

[Akshay Mehta]

Hello Everyone,

I am using this Rest API for getting avatar of issuetype. 
API : /rest/api/2/universal_avatar/view/type/{type}/owner/{entityId} API Link 
so, the issue I'm facing is fetching avatar for this particular entityId = 10000, which has type "issuetype"

https://mysite.atlassian.net/rest/api/2/universal_avatar/view/type/issuetype/owner/10000

I can share that this entityId is for epic. I am able to get avatars of other issuetypes.

So, Can anyone help me what could be the problem on this api call.
I'm getting this response.

{"errorMessages":["Could not find an avatar matching the provided parameters."],"errors":{}}

 I've checked that there is an avatar metching that entityId .

[Phil Swanson]

Same issue here. Was able to resolve by changing out broken icons in mysite.atlassian.net/jira/settings/issues/issue-types