QRadar community edition: Invalid configuration for device '8':

Workaround:

To work around this issue, remove the vmw:value="-1" from the OVF descriptor:
Download the exported OVF template from content library.
Edit the OVF descriptor and makethe following changes:
<vmw:Config ovf:required="false" vmw:value="-1" vmw:key="graphicsMemorySizeInKB"/>

to

<vmw:Config ovf:required="false" vmw:key="graphicsMemorySizeInKB"/>

Upload the OVF template back to content library.

https://kb.vmware.com/s/article/2152046