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I am facing after an issue after upgrading version magneto 2.4.2 to 2.4.5 When I run this command I got error
json_decode(): Passing null to parameter #1 ($json) of type string is deprecated
app/code/Vendor/Module/Helper/Data.php(495): json_decode(NULL)
public function getParametersAttribute()
return $cookieValue=json_decode((string)$cookieValue);
2. Add condition
public function getParametersAttribute(){
if (isset($cookieValue)) {
return $cookieValue=json_decode($cookieValue);
}else{
return [];
3. Try this one
public function getParametersAttribute(){
return $cookieValue= json_decode($cookieValue ?? '');
public function getParametersAttribute()
-. return $cookieValue=json_decode($cookieValue);
public function getParametersAttribute()
+. return $cookieValue= json_decode($cookieValue ?? '');
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