I cannot place a limit order about coinbase-pro-sdk HOT 13 CLOSED

<?php

$api = CoinbaseFacade::createDefaultCoinbaseApi('https://api.pro.coinbase.com', $_API_KEY, $_API_SECRET, $_API_PASS);

/* Start to develop here. Best regards https://php-download.com/ */include 'db_connection.php';$db = OpenCon();
$getaccounts= "N";
$getcurrencies = "Y";
$placeorder = "Y";
$placelimits ="Y";
$sellorders = "Y";

//get account informationif($getaccounts= "Y"){ echo 'getting accounts';$accts = $api->accounts()->list();$output='';file_put_contents('file.txt', $output);$i=0;foreach($accts as $myaccounts){$output = print_r($myaccounts, true);file_put_contents('file.txt', $output,FILE_APPEND);}$sql='TRUNCATE TABLE account';$result = mysqli_query($db,$sql);$fh = fopen('file.txt','r');while ($line = fgets($fh)) {  // <... Do your work with the line ...>   $item = 'id';if (substr($line,5,strlen($item)) == $item){   $strpos = strripos($line,"=>")+2;    $item= substr($line,$strpos) ;  $sqli="INSERT INTO ACCOUNT(id,currency,balance,holdFunds,availableFunds,isTradingEnabled,profileId) VALUES (";     $sqli=$sqli."'".$item."',";  }    $item = 'currency';if (substr($line,5,strlen($item)) == $item){   $strpos = strripos($line,"=>")+2;    $item= substr($line,$strpos) ;  $sqli=$sqli."'".$item."',";  }   $item = 'balance';if (substr($line,5,strlen($item)) == $item){   $strpos = strripos($line,"=>")+2;    $item= substr($line,$strpos) ;  $sqli=$sqli.$item.",";  } $item = 'holdFunds';if (substr($line,5,strlen($item)) == $item){   $strpos = strripos($line,"=>")+2;    $item= substr($line,$strpos) ; $sqli=$sqli.$item.",";  }

$item = 'availableFunds';
if (substr($line,5,strlen($item)) == $item){
    $strpos = strripos($line,"=>")+2;
    $item= substr($line,$strpos);
    $sqli=$sqli.$item.",";
}

$item = 'isTradingEnabled';

if (substr($line,5,strlen($item)) == $item){ 
    $strpos = strripos($line,"=>")+2; 
    $item= substr($line,$strpos) ; $sqli=$sqli.$item.",";  
}

$item = 'profileId';
if (substr($line,5,strlen($item)) == $item){ 
    $strpos = strripos($line,"=>")+2; 
    $item= substr($line,$strpos); 
    $sqli=$sqli."'".$item."')"; $profileId= 'YES';  
}

if (isset($profileId)){  $result = mysqli_query($db,$sqli);  unset($profileId);}

//die;





}
fclose($fh);
}//end of get accounts

//this command fails
$currencylist =$api->products()->get24hrStats('19d88d23-744c-498b-96bc-63541f326a40');

foreach($currencylist as $listitems){ echo '<pre>';$output = print_r($listitems);echo '</pre>';echo '<br>';}





echo 'about to place an order';

//Place a market order
//$orderToPlace = CoinbaseFacade::createMarketOrderToPlace('buy', 'ANKR-USD', 10.00);
//$placedOrder = $api->orders()->placeOrder($orderToPlace);

//$orderToPlace = CoinbaseFacade::createMarketOrderToPlace('buy', 'MKR-USD', 50.00);//$placedOrder = $api->orders()->placeOrder($orderToPlace);

//$placedOrderId =$api->orders()->getOrderById($placedOrder->getId()); //echo $placedOrderID; /* public static function createLimitOrderToPlace(        string $side,        string $productId,        float $price,        float $size,        ?string $timeInForce = null,        ?string $cancelAfter = null,        bool $postOnly = false,        ?string $selfTradePrevention = null,        ?string $stop = null,        ?float $stopPrice = null,        ?string $clientOrderId = null    ): LimitOrderToPlace {        return new LimitOrderToPlace(            $side,            $productId,            $price,            $size,            $timeInForce,            $cancelAfter,            $postOnly,            $selfTradePrevention,            $stop,            $stopPrice,            $clientOrderId        );    }     */  
//$orderToPlace = CoinbaseFacade::createLimitOrderToPlace('sell','ANKR-USD',.13,5,'' ,'' ,'' ,'' ,'' ,.13,'');/*

$limitOrder = CoinbaseFacade::createLimitOrderToPlace(    sell,    'ANKR-USD',    .13, // Price    5, // Sice    'TIME_IN_FORCE_GOOD_TILL_CANCELED', // The TIF flag    'CANCEL_AFTER_DAY', // A cancel after time    true, // Define if post-only or taker allowed, post_only is disabled by default   'SELF_TRADE_PREVENTION_DECREASE_AND_CANCEL', // The self trade prevention flag,    'Entry', // Direction flag for stop   .13, // Stop price    '132fb6ae-456b-4654-b4e0-d681ac05cea1' // A custom id that you defined (UUID format only));
*/

//$placedOrder = $api->orders()->placeOrder($limitOrder);

$db = CloseCon($db);
//hEADER("refresh:3");