Request token retrieval failed:

RESPONSE:

Array
(
    [linkedin] => Array
        (
        )

    [info] => Array
        (
            [url] => https://api.linkedin.com/uas/oauth/requestToken
            [content_type] => 
            [http_code] => 410
            [header_size] => 548
            [request_size] => 509
            [filetime] => -1
            [ssl_verify_result] => 0
            [redirect_count] => 0
            [total_time] => 0.072757
            [namelookup_time] => 0.012337
            [connect_time] => 0.019703
            [pretransfer_time] => 0.045833
            [size_upload] => 0
            [size_download] => 0
            [speed_download] => 0
            [speed_upload] => 0
            [download_content_length] => 0
            [upload_content_length] => -1
            [starttransfer_time] => 0.072733
            [redirect_time] => 0
            [redirect_url] => 
            [primary_ip] => 108.174.10.12
            [certinfo] => Array
                (
                )

            [primary_port] => 443
            [local_ip] => 172.30.3.17
            [local_port] => 52102
        )

    [oauth] => Array
        (
            [header] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="112b0f44003ceca3686a8d2a03d31a5b",oauth_timestamp="1600564131",oauth_consumer_key="75anr5w4aijrvv",oauth_callback="https%3A%2F%2Fventurepact.com%2Fsite%2FlinkedinAfter%3Frole%3D2%26ref%3D0%26redirectType%3D0",oauth_signature_method="HMAC-SHA1",oauth_signature="5JUorbWT%2BhSOI9pdoOl%2B1ZT37L0%3D"
            [string] => POST&https%3A%2F%2Fapi.linkedin.com%2Fuas%2Foauth%2FrequestToken&oauth_callback%3Dhttps%253A%252F%252Fventurepact.com%252Fsite%252FlinkedinAfter%253Frole%253D2%2526ref%253D0%2526redirectType%253D0%26oauth_consumer_key%3D75anr5w4aijrvv%26oauth_nonce%3D112b0f44003ceca3686a8d2a03d31a5b%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1600564131%26oauth_version%3D1.0
        )

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


LINKEDIN OBJ:

LinkedIn Object
(
    [callback:protected] => https://venturepact.com/site/linkedinAfter?role=2&ref=0&redirectType=0
    [token:protected] => 
    [application_key:protected] => 75anr5w4aijrvv
    [application_secret:protected] => Aox4aWXcgWh1J3pk
    [response_format:protected] => xml
    [last_request_headers] => Array
        (
            [0] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="112b0f44003ceca3686a8d2a03d31a5b",oauth_timestamp="1600564131",oauth_consumer_key="75anr5w4aijrvv",oauth_callback="https%3A%2F%2Fventurepact.com%2Fsite%2FlinkedinAfter%3Frole%3D2%26ref%3D0%26redirectType%3D0",oauth_signature_method="HMAC-SHA1",oauth_signature="5JUorbWT%2BhSOI9pdoOl%2B1ZT37L0%3D"
            [1] => Content-Type: text/plain; charset=UTF-8
        )

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