Oops, something went wrong "5" is not numeric

Receiving error “Oops, something went wrong “5” is not numeric” when submitting changes to a system already imaged. I have changed dns timeout due to a previous article to the following [5,10,15,20]. But no matter what I change dns timeout to it fails with value not numeric.
Expected outcome:
Successful submit
Foreman and Proxy versions:
Foreman v2.5.3
Foreman and Proxy plugin versions:
foreman-tasks v4.1.5
foreman-ansible v6.3.4
foreman_bootdisk v17.1.0
foreman_dhcp_browser v0.0.8
foreman_discovery v17.0.1
foreman_hooks v0.3.17
foreman_remote_execution v4.5.6
foreman_templates v9.1.0
ovirt_provision_plugin v2.0.3
Distribution and version:

Other relevant data: