[Python] Facebook API - Insights: Status: 500, error code 1, "An unknown error occurred" at...

Of the late when trying to fetch data from FB's Marketing API, I get following error:

Status: 500
Response:
{
"error": {
"code": 1,
"message": "An unknown error occurred"
}
}​

at times. If I try to immediately make the same request via Postman, it returns data at times and at times throws 500 status error. Below is the data being sent to FB

facebookads.exceptions.FacebookRequestError:

Message: Call was not successful
Method: GET
Path: https://graph.facebook.com/v2.3/act_XYZ/insights
Params: {
'time_increment': 1,
'level': 'adgroup',
'fields': '["account_name", "deeplink_clicks",
"campaign_name",
"social_impressions",
"campaign_group_name",
"campaign_id",
"adgroup_name",
"unique_impressions",
"social_reach",
"unique_social_impressions",
"placement",
"total_actions",
"cpm",
"impressions",
"ctr",
"reach",
"clicks",
"social_clicks",
"spend",
"website_clicks",
"adgroup_id",
"actions",
"cpc",
"cpp",
"unique_clicks",
"app_store_clicks",
"unique_social_clicks",
"account_id",
"campaign_group_id"
]',
'breakdowns': '["placement"]',
'time_range': '{"since":"2015-09-01","until":"2015-09-09"}',
'summary': None
}

Status: 500
Response:
{
"error": {
"code": 1,
"message": "An unknown error occurred"
}
}


I am using Facebook's Python SDK from

-e git+https://github.com/pythonforfaceboo...bedd23df714e7f77c1051f5b#egg=facebook_sdk-dev
​

Can someone please let me know what I might be missing in this case?

Thanks.

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