SGEN is not starting

Hi All,

I've recently built Sandbox system from existing Production export. After performing post copy steps trying to trigger SGEN but it is not allowing.

-> SGEN - generate All Object -> Select All SW components -> "Application server for Parallel genaration" ==> this is showing the status as RED and not showing Hardware column.

From it is not proceeding further to trigger the SGEN job.

Tried manually triigering the SGEN job, even it is getting completed immediately doing nothing.

Please find the below screen of the SGEN - from here I couldn't able to proceed further.

Thanks,

Ramesh