problem plugin "Facebook Customer Chat for WordPress

Hello everyone, I installed the wordpress plugin “Facebook Customer Chat for WordPress” but I can not make it work, I have a console error:
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all.js? hash = e4b27a2ff384d4f77999ae8a7a12c47c & ua = modern_es6: 52

The CustomerChat plugin is no longer part of the Facebook SDK. # To continue using it please use the correct SDK URL, #sense replace sdk.js with sdk / xfbml.customerchat.js. # For more details see https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin/sdk

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