Problem after wp 5.6 update

  • After update wp 5.6 I have new line on all of my pages:

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<b>Warning</b>:  call_user_func_array() expects parameter 1 to be a valid callback, function 'wp_ffpc_redirect_callback' not found or invalid function name in <b>/***/www/wp-includes/class-wp-hook.php</b> on line <b>287</b><br />
    • This topic was modified 3 years, 10 months ago by cooledit.
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