i have this error

[nas2day]

Invalid Payment Processor
Got Http response code 401 when accessing https://api.paypal.com/v1/oauth2/token..

any way to fix this problem?

[MTS_Justin]

Hello,

The HTTP 401 is an authentication error, which means the credentials being used (client_id & client_secret) are not valid.

Follow the guide available here :

https://developer.paypal.com/reference/get-an-access-token

(note : ensure to leave the ":" in-between the client_id and client_secret when requesting an access token)

You will also need to use the REST API credentials from a "LIVE" environment REST application when submitting a request for an access token to the endpoint "https://api.paypal.com/v1/oauth2/token"

Thanks !