Null image shows wrong error message about bonej2 HOT 6 CLOSED

Maybe this is something worth to improve on the SciJava side? The error message is generated during input harvesting here:
https://github.com/scijava/scijava-common/blob/608831075023f9ddf053691a82c2be24458f337c/src/main/java/org/scijava/widget/AbstractInputHarvester.java#L122-L123

from bonej2.

Could it be something as simple as

if (ImgPlus.class.isAssignableFrom(type) || Img.class.isAssignableFrom(type)) {
    throw new ModuleException("No image open");
}

?

from bonej2.

The message "No image open" doesn't make much sense if you run the command headless via scripting or from within KNIME.

from bonej2.

Would "The command requires an image" make more sense?

from bonej2.

PR created

from bonej2.

PR rejected

from bonej2.