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Home/ Questions/Q 8819693
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Editorial Team
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Editorial Team
Asked: June 14, 20262026-06-14T05:25:32+00:00 2026-06-14T05:25:32+00:00

FB.ui({ method: ‘apprequests’, title: ‘Swag with the Swedes’, message: ‘Win 2 tickets to Swedish

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FB.ui({
        method: 'apprequests',
        title: 'Swag with the Swedes',
    message: 'Win 2 tickets to Swedish House Mafia'
}, requestCallback);

I have the code above which throws Uncaught TypeError: Cannot call method ‘postMessage’ of null

I’ve searched everywhere for this but no solution. Anyone has any idea of what’s wrong?

Thanks

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-06-14T05:25:33+00:00Added an answer on June 14, 2026 at 5:25 am

    I found the issue.

    The following div had to be in the body:

    <div id="fb-root"></div>
    
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