Spring oauth2 refresh token - Cannot convert access token to JSON

Question

I\'m trying to use a refresh token in a Spring OAuth application without success. The system will issue a refresh token on a password grant:

  {
  \"access_t         


        

Answer 1

It is been two years I don't if it helps anyone but my same issue was due to I was not using the tokenEnhancer I used in my JwtTokenStore in my token service provider DefaultTokenServices.