Token renewal

Hello,
Trying to use your lib but i have a problem for renewal token. I don't have any more information. The only error message i got is the token is expired.

Can you give a look at this script and tell me what i'm doing wrong please?
https://gist.github.com/Miloune/d04cf968883d02b9acda7cb9c66b22df/0fc6eec1c52d38d2e56d3cef75a3d7f89e5f065c#file-domoticz_nokia_health-py-L105

Thanks 