I've setup two business developer applications (test & prod environments) to handle Facebook Login and posting an image to a group directly via a web app. The endpoint I'm using is the following: https://graph.facebook.com/v14.0/{group-id}/photos?access_token={access_token}
I followed this documentation: https://developers.facebook.com/.../refer.../page/photos/...
with a POST request and Content-Type: multipart/form-data.
The request payload looks like the following:
-----------------------------41883366036964688284103242839
Content-Disposition: form-data; name="source"; filename="blob"
Content-Type: image/png
�PNG
{a bunch of alphanumeric chars........}
-----------------------------41883366036964688284103242839
Content-Disposition: form-data; name="caption"
{the caption of the image}
-----------------------------41883366036964688284103242839--
The test environment works flawlessly: I build the picture in javascript and then call the api endpoint against a test facebook group.
On the production environment, the VERY SAME call with the very same image returns the error:
"Please reduce the amount of data you're asking for, then retry your request"
The post actually makes his way on the Facebook group but without the image.
I tried putting the limit=1 param with no luck.
I tried "cross-posting" with the Facebook PROD app to the Facebook TEST group and it works, so it seems the problem is posting to the PROD Facebook group.
In the image below what I see in the browser when the request fails, it seems the image size is below the 4Mb limit given by Facebook. Is there a better way to check the size of the image I'm trying to send?
However, if the image is the same, how come in one group I get to post correctly and in the other I don't?
How can I overcome this?