Expected user_string to be a string, null given in C:xampp… on line 1662

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Recently I’ve had this warning error message on my wordpress:

Warning: hash_equals(): Expected user_string to be a string, null given in C:xampp3htdocsPlurielleswordpresswp-includespluggable.php on line 1662

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Warning: hash_equals(): Expected user_string to be a string, null given in C:xampp3htdocsPlurielleswordpresswp-includespluggable.php on line 1668

It disabled a lot of features on my website (add an image and a lot more….)
I’ve been looking in the php file for these two lines, and they are:

line 1662 : 

if ( hash_equals( $expected, $nonce ) ) {
    return 1;
}

line 1668 : 

if ( hash_equals( $expected, $nonce ) ) {
    return 2;
}

Do you know how I could fix it? I’m a newbie in PHP so I apologize if this is really easy to solve (you could throw me rock).

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2 comments

  1. Thanks a lot for the help I found on the website, I’ve found a solution and I post it here for people who would be in same situation than me.

    You juste have to use a settype ($variable ="string")
    in my case :
    settype ($expected ="string")
    settype ($nonce="string")
    On wordpress that should resolve the problem.

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