Drupal service does not run

Bad response statusCode [422]. Status [422 Unprocessable Entity]. Body: [code=InvalidOption, fieldName=Image is required when selector is not passed in, baseType=error] from [http://localhost:8080/v3/projects/1a5/services]

Hi, I am using Rancher|v2.0.0-alpha10. When I try to install drupal service from the rancher default catalogue. I always get above error. How can I correct this?