Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: `POST https://api.dropboxapi.com/2/files/get_metadata` resulted in a `400 Bad Request` response: Error in call to API function "files/get_metadata": Invalid authorization value in HTTP header/URL parameter in /var/www/html/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113 Stack trace: #0 /var/www/html/vendor/guzzlehttp/guzzle/src/Middleware.php(72): GuzzleHttp\Exception\RequestException::create() #1 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(209): GuzzleHttp\Middleware::GuzzleHttp\{closure}() #2 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(158): GuzzleHttp\Promise\Promise::callHandler() #3 /var/www/html/vendor/guzzlehttp/promises/src/TaskQueue.php(52): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}() #4 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(251): GuzzleHttp\Promise\TaskQueue->run() #5 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(227): GuzzleHttp\Promise\Promise->invokeWaitFn() #6 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(272): GuzzleHttp\Promise\Promise->waitIfPending() #7 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(229): GuzzleHttp\Promise\Promise->invokeWaitList() #8 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(69): GuzzleHttp\Promise\Promise->waitIfPending() #9 /var/www/html/vendor/guzzlehttp/guzzle/src/Client.php(124): GuzzleHttp\Promise\Promise->wait() #10 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Http/Clients/DropboxGuzzleHttpClient.php(57): GuzzleHttp\Client->send() #11 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/DropboxClient.php(161): Kunnu\Dropbox\Http\Clients\DropboxGuzzleHttpClient->send() #12 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(273): Kunnu\Dropbox\DropboxClient->sendRequest() #13 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(243): Kunnu\Dropbox\Dropbox->sendRequest() #14 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(225): Kunnu\Dropbox\Dropbox->postToAPI() #15 /var/www/html/test.php(10): Kunnu\Dropbox\Dropbox->getMetadata() #16 {main} Next Kunnu\Dropbox\Exceptions\DropboxClientException: Error in call to API function "files/get_metadata": Invalid authorization value in HTTP header/URL parameter in /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Http/Clients/DropboxGuzzleHttpClient.php:59 Stack trace: #0 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/DropboxClient.php(161): Kunnu\Dropbox\Http\Clients\DropboxGuzzleHttpClient->send() #1 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(273): Kunnu\Dropbox\DropboxClient->sendRequest() #2 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(243): Kunnu\Dropbox\Dropbox->sendRequest() #3 /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Dropbox.php(225): Kunnu\Dropbox\Dropbox->postToAPI() #4 /var/www/html/test.php(10): Kunnu\Dropbox\Dropbox->getMetadata() #5 {main} thrown in /var/www/html/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Http/Clients/DropboxGuzzleHttpClient.php on line 59