"Please specify classes allowed for unserialization in 2nd argument" Code Answer's

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Please specify classes allowed for unserialization in 2nd argument

Lokesh003Coding on Dec 07, 2020

PHP supports a method known as 'serialize (Object)' that is used to serialize 
the object. In PHP 7, an additional security feature has been added by 
introducing filtering 'unserialize (arg1, arg2)' method. This feature seeks 
to provide better security when unserializing objects on untrusted data. It 
prevents possible code injections by enabling the developer to whitelist 
classes that can be unserialized.

$data = unserialize($serializeObj, ["allowed_classes" => true]);

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Unable to create file (unable to open file: name = 'model_2020-07-31 17:30:22.924235.hdf5', errno = 22, error message = 'Invalid argument', flags = 13, o_flags = 302 Tuple or struct_time argument required TypeError: Argument 1 passed to Drupal\Core\Entity\EntityViewBuilder::view() must implement interface netmgr : Failed to open QEMU pipe 'qemud:network': Invalid argument the "data" argument must be of type string or an instance of buffer, typedarray, or dataview. received null got an unexpected keyword argument 'conf' argument about changing school uniforms error: *.cpp: Invalid argument Argument 1 passed to Doctrine\Inflector\Inflector::singularize() must be of the type string, null given, run function from argument parser jasmine spyon argument of type is not assignable to parameter of type 'prototype' fit_transform() missing 1 required positional argument: 'raw_documents' JSON.parse(localStorage.getItem('users') Argument of type 'string | null' is not assignable to parameter of type 'string'. 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"Please specify classes allowed for unserialization in 2nd argument" Code Answer's