Auto osting to facebook not working.

Starting several days ago, when we start a new post, in the publish sidebar we get this:
Before you hit Publish, please refresh the following connection(s) to make sure we can Publicize your post:

Refresh connection with Facebook

I have refreshed the connection several times. I tried editing the connection, I tried disconnecting and reconnecting Facebook.
When I made a post I refresh it and the error stayed but it posted to Facebook. The next person to post, it did not post it to Facebook.
Any suggestions as to how to fix this, please

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