page describing oauth, under the title describing refresh tokens in the table and php code there is scope required field while your server does not take that field, also php code does include while table does not grant_type field which is also required.
page describing oauth, under the title describing refresh tokens in the table and php code there is
scoperequired field while your server does not take that field, also php code does include while table does notgrant_typefield which is also required.