Error (404) in route when using Marketing (A/B-testing)

Hi!

I get the following error when using the Marketing package (A/B-testing). It happens everytime it tries to save the result, and I get the same error if i try to access it directly (using postman for instance). It seems it's something with how the routes are registererd. Has anyone else seen this and managed to get it working?

{"message": "No HTTP resource was found that matches the request URI 'https://[siteurl]/api/episerver/Testing/SaveKpiResult'.","messageDetail": "No type was found that matches the controller named 'episerver'."
}

Thanks!

/Eric