Unfortunately, we got an error: Authentication failed! LinkedIn returned an invalid Token in response: array ( 'linkedin' => array ( ' __400:_Content_Length_Required __ '"content-type" content="text/html; charset=UTF-8">

Content Length Required

Could not process this request because Content-Length was not specified. Please double-check the URL (address) you used, or contact us if you feel you have reached this page in error.

Click the ', '#8220;Back' => '', '#8221;_button_on_your_browser_or_ '"//www.linkedin.com/home">go to the home page.


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', 'nbsp;
' => '', ), 'info' => array ( 'url' => 'https://api.linkedin.com/uas/oauth/requestToken', 'content_type' => 'text/html', 'http_code' => 411, 'header_size' => 457, 'request_size' => 501, 'filetime' => -1, 'ssl_verify_result' => 0, 'redirect_count' => 0, 'total_time' => 0.045263, 'namelookup_time' => 0.0042, 'connect_time' => 0.010061, 'pretransfer_time' => 0.02488, 'size_upload' => 0.0, 'size_download' => 5569.0, 'speed_download' => 123755.0, 'speed_upload' => 0.0, 'download_content_length' => 5569.0, 'upload_content_length' => -1.0, 'starttransfer_time' => 0.045188, 'redirect_time' => 0.0, 'redirect_url' => '', 'primary_ip' => '108.174.10.22', 'certinfo' => array ( ), 'primary_port' => 443, 'local_ip' => '172.31.47.133', 'local_port' => 37302, ), 'oauth' => array ( 'header' => 'Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="65ebd653cf0f7410b41f7d5b9989903f",oauth_timestamp="1734793680",oauth_consumer_key="75t3m1mghcrw7c",oauth_callback="https%3A%2F%2Fprogressiveproductions.eu%2Fvendor%2Fhybridauth%2F%3Fhauth.done%3DLinkedIn",oauth_signature_method="HMAC-SHA1",oauth_signature="7wZWeaYEBjznym2N1h1xAiYlbV0%3D"', 'string' => 'POST&https%3A%2F%2Fapi.linkedin.com%2Fuas%2Foauth%2FrequestToken&oauth_callback%3Dhttps%253A%252F%252Fprogressiveproductions.eu%252Fvendor%252Fhybridauth%252F%253Fhauth.done%253DLinkedIn%26oauth_consumer_key%3D75t3m1mghcrw7c%26oauth_nonce%3D65ebd653cf0f7410b41f7d5b9989903f%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1734793680%26oauth_version%3D1.0', ), 'error' => 'OAuth callback URL was not confirmed by the LinkedIn end-point', 'success' => false, ) Error code: 5