Error message in gwd.log when there's an active VM creating resource

[minondoa]

When having defined a cloud resource from which VMs will be created, an error message keeps appearing in the log file "gwd.log"

Tue Apr 11 11:23:44 2017 [IM][E]: Message im_drm4g for host 2102701808 (does not exist) from MAD ((null)).

Eventually, the VMs are created and become accessible and the message stops appearing.