How do I fix mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in

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PHP

Hi there can anyone help me im trying to echo the results from my MySQL table
and i keep getting this error

mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in



Code:


<pre lang="php">$uuid = $_REQUEST[&#39;uuid&#39;];
//mysqli_query($link, &quot;SELECT * FROM website WHERE user = &#39;$usr&#39;&quot;);
$result = mysqli_query($link, &quot;SELECT * FROM AlertPack WHERE Key = &#39;$uuid&#39;&quot;);
if (mysqli_num_rows($result) &gt; 0) {
// output data of each row
while($row = mysqli_fetch_assoc($result))
{
echo($row[&quot;Type&quot;] . &quot;*&quot; . $row[&quot;Message&quot;] . &quot;$&quot; . $row[&quot;Time&quot;]);
}
}

?&gt;</pre>