Odd: When I play a genre, the site tries to POST to http://localhost/cmdfm/api/users/ http://localhost/cmdfm/api/users/, which is denied by my local Apache sinc

Odd: When I play a genre, the site tries to POST to http://localhost/cmdfm/api/users/ http://localhost/cmdfm/api/users/, which is denied by my local Apache since it does not exist. Coding error?