Post don’t publish sometimes

Hello,

I have a problem: sometimes the plugin don’t publishing post on facebook.
For example four post yes and one no. The error when don’t publishing is this: 252156801657151/feed/An unknown error occurred
I read one topic with this error, of one years ago, and I tried to reauthorize on social media autopublish options and check if there is an error on facebook application, but the problem persists.
Yesterday and others day all worked perfectly.
Wordpress version: 5.4.1
Social media autopublish version: 2.4.1

Thanks in advance.
Best regards