My web-app has the Facebook JS SDK implemented.
Yesterday, everything was working fine and without any modification on the code, the script request started to return 404 errors.
When I try to access it directly, this is what I find:
Facebook Status shows that the API everything is OK.
Instagram's embeds.js and Facebook's debug SDK are also returning the same error:
Does anyone knows what it happening? I've tried accessing these files using my 4G network and the same error is displayed.
I'm based in Dublin, Ireland.
I figured this one out.. it seems the .net isn't working anymore.. I used ".com" instead:
Use https://connect.facebook.com/en_US/sdk.js
instead of https://connect.facebook.net/en_US/sdk.js
It is related to this bug, subscribe to get updated: https://developers.facebook.com/bugs/949091578557056/
There is a workaround to use .com instead of .net.
Edit: The bug is fixed now.
I had the same problem. Use //connect.facebook.com/en_US/sdk.js url.
来源：https://stackoverflow.com/questions/40546695/facebook-sdk-js-returns-404-error