[RESOLVED] PDO error of some sort

[UAL225]

So I wrote this script, and it works when i dont bind the "Random_Key" and use it as it is, but when I bind the key with bindParam() I am getting a error. Can you see whats going wrong?

<?php
//Fetches Random_Key from email to use in binding
$Random_Key = $_GET['c'];

    //Sets other variables for later use
    $ERRmsg = "";
    $validCount = 0;
    
        //Opens a connection to MySQL
        try {
            $wdp = new PDO('mysql:host=localhost; dbname=***********', '***********', '******');
            $wdp->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                //prepare the SQL statement
                $sth = $wdp->prepare(
                "SELECT
                user_email,
                Active
                FROM
                Users
                WHERE
                Random_Key = :key
                ");
                
                    //binds the key for safety
                    $sth->bindParam(':key', $Random_Key);
                
                    //Excutes the SQL statement
                    $sth->execute();

                        //Sets the statement into an array
                        $result = $sth->fetch(PDO::FETCH_ASSOC);
                            $active = $result[Active];
                            $email = $result[user_email];
                        
                            //Checks if account already active
                            if($active == 1) $ERRmsg .= "You have already confirmed this account. <br/>";
                            if($active == 3) $ERRmsg .="Your account has been disabled for securty reasons, contact the Web Admin for more info";
                                
                                //checks to see if error message is empty, if so continues if not throws error
                                if(empty($ERRmsg))
                                {
                                    //If everything passes connects back to Database and updates to make account active
                                    $update = $wdp->prepare(
                                    "UPDATE
                                    Users
                                    SET
                                    Active = '1'
                                    Where
                                    Random_Key= :key
                                    ");
                                    
                                                        //binds the key for safety
                                                        $sth->bindParam(':key', $Random_Key);

                                        //Exectures the update
                                        $update->execute();
                                        echo ("<p>Your account has been confirmed!");
                                }
                                    else
                                    {
                                        echo $ERRmsg;
                                    }
            
            }
            catch (PDOException $ex) {
            $msg = $ex->errorInfo;
            error_log(var_export($msg, true));
            die("<p>Sorry, there was an unrecoverable database error. Debug data has been logged.</p>");
                                                    };
?>