Subject
Graph API call and Rest API call for liking or commenting on Event Post are not working.

Description
To like or comment an Event Post, tried use the either the REST API or Graph API in the Graph explorer, they all returns the same error which says "(#100) Error finding the requested story"

API Call
REST API: stream.addLike;
stream.addComment

GRAPH: HTTP POST to EVENT_POST_ID/comments
HTTP POST to EVENT_POST_ID/likes

Web console check
Graph Exploerer

Competitor platform confirmation
N/A. Ipad is able to like/comment on the event post.

stream.addLike

Facebook DEBUG: Payload:

Content-Disposition: form-data;name="format"

JSON

--Part-Boundary

Content-Disposition: form-data;name="method"


facebook.stream.addLike

--Part-Boundary

Content-Disposition: form-data;name="post_id"


411932538827255_411932912160551

<-------End of add like payload-------------->


stream.addComment

Facebook DEBUG: Payload:

Content-Disposition: form-data;name="comment"

Hello

--Part-Boundary

Content-Disposition: form-data;name="format"

JSON

--Part-Boundary

Content-Disposition: form-data;name="method"

facebook.stream.addComment

--Part-Boundary

Content-Disposition: form-data;name="post_id"

411932538827255_411932912160551

--Part-Boundary

<-------End of add comment payload-------------->


Stream.addComment error:

{
"error_code": 100,
"error_msg": "Error finding the requested story",
"request_args": [
{
"key": "comment",
"value": "Hello"
},
{
"key": "format",
"value": "JSON"
},
{
"key": "method",
"value": "facebook.stream.addComment"
},
{
"key": "post_id",
"value": "411932538827255_411932912160551"
},
]
}


Stream.addLike error:

{
"error_code": 100,
"error_msg": "Error finding the requested story",
"request_args": [
{
"key": "format",
"value": "JSON"
},
{
"key": "method",
"value": "facebook.stream.addLike"
},
{
"key": "post_id",
"value": "411932538827255_411932912160551"
},
]
}

Graph API error
{
"error": {
"message": "(#100) Error finding the requested story",
"type": "OAuthException",
"code": 100
}
}