Highlights

    That error message ” Missing or invalid image file ” means that Facebook API couldn’t load the image from the URL you provided.

    Make sure the image URL is valid and accessible worldwide, you can use Facebook URL debug tool to debug your image URL

    https://developers.facebook.com/tools/debug/sharing/



    If the image is from your server try to upload the script URL to a third party service https://imgur.com/ and try again.

    in Troubleshooting
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