Unable to resize

Get a error message when upload:
“Imsanity was unable to resize this image for the following reason: Editor kunne ikke vælges.. If you continue to see this error message, you may need to install missing server components. If you think you have discovered a bug, please report it on the Imsanity support forum: https://wordpress.org/support/plugin/imsanity”