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We are trying to integrate the drupal8 login REST api in react. And we are facing the below issue.

Status code 500: Service unavailable.

And When we checked the error log, we are seeing the following issue.

Symfony\Component\Serializer\Exception\NotEncodableValueException: Syntax error in Symfony\Component\Serializer\Encoder\JsonDecode->decode() (line 86 of /var/www/html/headlessdrupal/vendor/symfony/serializer/Encoder/JsonDecode.php).

Note: The below api works fine both in postman and CURL. But we having the issue, while trying to connect via react. http://domain-name/user/login?_format=json content-type: application/json username and password provided in the raw data as below: { "name": "admin", "pass": "123456" } Please help on this.

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