PHP Fatal error: Interface 'JsonSerializable' not found - My Php Version is 7.0.17 [closed]

Question

I Developed One Laravel Project. In local System Its working Fine. When i move the Project to the Server. Its Return Following Error.

PHP Fatal error:  Interface 'JsonSerializable' not found in /home/vendor/laravel/framework/src/Illuminate/Support/Collection.php on line 18

My PHP Version is 7.0.17. How to Fix this Issue.

Collection.php

use Countable;
use Exception;
use ArrayAccess;
use Traversable;
use ArrayIterator;
use CachingIterator;
use JsonSerializable;
use IteratorAggregate;
use InvalidArgumentException;
use Illuminate\Support\Traits\Macroable;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Contracts\Support\Arrayable;

class Collection implements ArrayAccess, Arrayable, Countable, IteratorAggregate, Jsonable, JsonSerializable
{
    use Macroable;
    .....................
    ......................
}

Answer 1

Check your Php info Settings, Json is Enabled.

Answer 2

It would appear that the setup between local and server is different.

Ensure that the resources you are referencing are available to the server in the same location as the local.