I have this error on the main page of my website
1 exception(s):
Exception #0 (InvalidArgumentException): Unable to serialize value.
Exception #0 (InvalidArgumentException): Unable to serialize value.
#0 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/framework/App/PageCache/Kernel.php(153): Magento\Framework\Serialize\Serializer\Json->serialize(Array)
#1 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/module-page-cache/Model/Controller/Result/BuiltinPlugin.php(96): Magento\Framework\App\PageCache\Kernel->process(Object(Magento\Framework\App\Response\Http\Interceptor))
#2 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/framework/Interception/Interceptor.php(146): Magento\PageCache\Model\Controller\Result\BuiltinPlugin->afterRenderResult(Object(Magento\Framework\View\Result\Page\Interceptor), Object(Magento\Framework\View\Result\Page\Interceptor), Object(Magento\Framework\App\Response\Http\Interceptor))
#3 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\View\Result\Page\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Response\Http\Interceptor))
#4 /chroot/home/publimer/publimercado.com.mx/html/generated/code/Magento/Framework/View/Result/Page/Interceptor.php(130): Magento\Framework\View\Result\Page\Interceptor->___callPlugins('renderResult', Array, NULL)
#5 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/framework/App/Http.php(139): Magento\Framework\View\Result\Page\Interceptor->renderResult(Object(Magento\Framework\App\Response\Http\Interceptor))
#6 /chroot/home/publimer/publimercado.com.mx/html/generated/code/Magento/Framework/App/Http/Interceptor.php(24): Magento\Framework\App\Http->launch()
#7 /chroot/home/publimer/publimercado.com.mx/html/vendor/magento/framework/App/Bootstrap.php(257): Magento\Framework\App\Http\Interceptor->launch()
#8 /chroot/home/publimer/publimercado.com.mx/html/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#9 {main}
Apply the below steps:
Go to /vendor/magento/framework/Serialize/Serializer/Json.php
Find the function unserialize($string)
Apply the below code to check if string is serialized then use serialize($string).
public function unserialize($string) { if($this->is_serialized($string)) { $string = $this->serialize($string); } $result = json_decode($string, true); if (json_last_error() !== JSON_ERROR_NONE) { throw new \InvalidArgumentException('Unable to unserialize value.'); } return $result; }
Add function to check if string is serialized:
function is_serialized($value, &$result = null) { if (!is_string($value)) { return false; } if ($value === 'b:0;') { $result = false; return true; } $length = strlen($value); $end = ''; switch ($value[0]) { case 's': if ($value[$length - 2] !== '"') { return false; } case 'b': case 'i': case 'd': $end .= ';'; case 'a': case 'O': $end .= '}'; if ($value[1] !== ':') { return false; } switch ($value[2]) { case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: break; default: return false; } case 'N': $end .= ';'; if ($value[$length - 1] !== $end[0]) { return false; } break; default: return false; } if (($result = @unserialize($value)) === false) { $result = null; return false; } return true; }
and clear the cache!
Thanks!
This is my Json.php file now, but i keep getting the same error
<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Serialize\Serializer;
use Magento\Framework\Serialize\SerializerInterface;
/**
* Serialize data to JSON, unserialize JSON encoded data
*
* @api
* @since 100.2.0
*/
class Json implements SerializerInterface
{
/**
* {@inheritDoc}
* @since 100.2.0
*/
public function serialize($data)
{
$result = json_encode($data);
if (false === $result) {
throw new \InvalidArgumentException('Unable to serialize value.');
}
return $result;
}
/**
* {@inheritDoc}
* @since 100.2.0
*/
public function unserialize($string)
{
if($this->is_serialized($string))
{
$string = $this->serialize($string);
}
$result = json_decode($string, true);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new \InvalidArgumentException('Unable to unserialize value.');
}
return $result;
}
function is_serialized($value, &$result = null)
{
if (!is_string($value))
{
return false;
}
if ($value === 'b:0;')
{
$result = false;
return true;
}
$length = strlen($value);
$end = '';
switch ($value[0])
{
case 's':
if ($value[$length - 2] !== '"')
{
return false;
}
case 'b':
case 'i':
case 'd':
$end .= ';';
case 'a':
case 'O':
$end .= '}';
if ($value[1] !== ':')
{
return false;
}
switch ($value[2])
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
break;
default:
return false;
}
case 'N':
$end .= ';';
if ($value[$length - 1] !== $end[0])
{
return false;
}
break;
default:
return false;
}
if (($result = @unserialize($value)) === false)
{
$result = null;
return false;
}
return true;
}
}
i had the same issue...
for met the solution was adding a CRYPT_KEY=xxxxxxxxxxx to the .env file.
tried changing the /vendor/magento/framework/Serialize/Serializer/Json.php file but did not work for me.