Project Invoice Workflow not working

As per the existing configurations, project contract invoices are sent sequentially to the approvers listed in the approval group and require their approval. However, as per new requirement for TPIND BU, Project Contract Invoices should be sent in parallel to the approvers and should not require approval from all of them. The invoices should be approved if 10 percent of the total approvers approve the request.

Please see the attached document for the configuration changes that we have done and the approval workflow error we are getting.