RHV 4.4 Compatibility

Problem: Cannot add a RHV 4.4 RHV Manager to the Compute Resources of Foreman 1.12

Expected outcome: Should be able to add it and see VMs

Foreman and Proxy versions: 1.12

Foreman and Proxy plugin versions:

foreman_bootdisk Plugin for Foreman that creates iPXE-based boot disks to provision hosts without the need for PXE infrastructure. Dominic Cleal 8.0.1
foreman_setup Plugin for Foreman that helps set up provisioning. Dominic Cleal 4.0.0
foreman_templates Engine to synchronise provisioning templates from GitHub Greg Sutcliffe 3.1.0

Distribution and version:

Other relevant data:

Error Message

Unable to save * undefined method `+’ for nil:NilClass

Foreman 1.12 is ancient - over 4 years old at this time (and contains many known bugs and security issues).
You should plan your upgrade to a recent foreman version (2.3.2 is the latest release at the time of writing) which will also allow you to use it with RHV 4.4.