Hi, I succesfully created the connection to the API via the PureCloudPlatformClientV2 library and I was trying to use the Conversations API to get the conversations but it appears blank as shown
I'd start with changing your page size to a non-zero value. Asking for zero results per page isn't likely to yield a useful response.
Per the description for GET /api/v2/conversations "Get active conversations for the logged in user", this endpoint will only return conversations in which your user is actively participating. Make sure you're connected to a conversation while making this API request.
While this endpoint doesn't explicitly document the not.a.user error code, I would expect this endpoint to only work with user-based logins. Using client credentials won't ever return conversations here because there is no user in context and therefore there can't be any active conversations in that context.