Request token retrieval failed:

RESPONSE:

Array
(
    [linkedin] => Array
        (
            [oauth_problem] => Scope NOT_AUTHORIZED : r_fullprofile
        )

    [info] => Array
        (
            [url] => https://api.linkedin.com/uas/oauth/requestToken
            [content_type] => application/x-www-form-urlencoded;charset=UTF-8
            [http_code] => 403
            [header_size] => 669
            [request_size] => 548
            [filetime] => -1
            [ssl_verify_result] => 0
            [redirect_count] => 0
            [total_time] => 0.169614
            [namelookup_time] => 0.013596
            [connect_time] => 0.036337
            [pretransfer_time] => 0.095954
            [size_upload] => 0
            [size_download] => 58
            [speed_download] => 341
            [speed_upload] => 0
            [download_content_length] => 58
            [upload_content_length] => -1
            [starttransfer_time] => 0.169598
            [redirect_time] => 0
            [redirect_url] => 
            [primary_ip] => 108.174.10.12
            [certinfo] => Array
                (
                )

            [primary_port] => 443
            [local_ip] => 107.161.187.2
            [local_port] => 37064
        )

    [oauth] => Array
        (
            [header] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="fdb08d5ffdc47cd5f1d75ef090761d33",oauth_timestamp="1540053904",oauth_consumer_key="75deotw9cwuxxn",oauth_callback="http%3A%2F%2Fwww.marketingaxle.com%3A80%2Fwp-content%2Fthemes%2Freinvent%2Fengage-via-linkedin.php%3FlType%3Dinitiate%26lResponse%3D1",oauth_signature_method="HMAC-SHA1",oauth_signature="ZBhhUUemhbcpWW4%2BnFWyc0nVKF4%3D"
            [string] => POST&https%3A%2F%2Fapi.linkedin.com%2Fuas%2Foauth%2FrequestToken&oauth_callback%3Dhttp%253A%252F%252Fwww.marketingaxle.com%253A80%252Fwp-content%252Fthemes%252Freinvent%252Fengage-via-linkedin.php%253FlType%253Dinitiate%2526lResponse%253D1%26oauth_consumer_key%3D75deotw9cwuxxn%26oauth_nonce%3Dfdb08d5ffdc47cd5f1d75ef090761d33%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1540053904%26oauth_version%3D1.0
        )

    [error] => OAuth callback URL was not confirmed by the LinkedIn end-point
    [success] => 
)


LINKEDIN OBJ:

LinkedIn Object
(
    [callback:protected] => http://www.marketingaxle.com:80/wp-content/themes/reinvent/engage-via-linkedin.php?lType=initiate&lResponse=1
    [token:protected] => 
    [application_key:protected] => 75deotw9cwuxxn
    [application_secret:protected] => rjzP6C5nfySnXRYA
    [response_format:protected] => xml
    [last_request_headers] => Array
        (
            [0] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="fdb08d5ffdc47cd5f1d75ef090761d33",oauth_timestamp="1540053904",oauth_consumer_key="75deotw9cwuxxn",oauth_callback="http%3A%2F%2Fwww.marketingaxle.com%3A80%2Fwp-content%2Fthemes%2Freinvent%2Fengage-via-linkedin.php%3FlType%3Dinitiate%26lResponse%3D1",oauth_signature_method="HMAC-SHA1",oauth_signature="ZBhhUUemhbcpWW4%2BnFWyc0nVKF4%3D"
            [1] => Content-Type: text/plain; charset=UTF-8
        )

    [last_request_url] => https://api.linkedin.com/uas/oauth/requestToken
)