The Could not retrieve a valid Token response from Token URL: oauth_problem=signature_invalid&oauth_problem_advice=javax.security.auth.login.LoginException%20while%20obtaining%20request%20token%20for%20%3APOST%26https%253A%252F%252Fapi.linkedin.com%252Fuas%252Foauth%252FrequestToken%26oauth_callback%253Dhttp%25253A%25252F%25252Fhospitalcasejobs.com%25252Fsocial%25252F%25253Fnetwork%25253Dlinkedin%252526lResponse%25253D1%2526oauth_consumer_key%253D7528m6r7g0qhdr%2526oauth_nonce%253D2c2bc4a3551d2cbc2783183bd1898057%2526oauth_signature_method%253DHMAC-SHA1%2526oauth_timestamp%253D1575706910%2526oauth_version%253D1.0%2526scope%253Dr_fullprofile%252520r_emailaddress%252520r_contactinfo%252520r_network%252520rw_groups%252520rw_nus%0AConsumer%20key%20%207528m6r7g0qhdr%20is%20disabled Plugin is set up incorrectly. Please check this issue with the website Administrator.