I got similar error as depicted here.
I was able to disable all schedulers except the ones that are related to OpenElis. When I try to disable and save I get the the following error:
Class [org.bahmni.module.elisatomfeedclient.api.task.OpenElisPatientFeedFailedEventsTask] could not be found. Check war file and/or modules for class [org.bahmni.module.elisatomfeedclient.api.task.OpenElisPatientFeedFailedEventsTask].