When clicking on "Resource Workbench" module, it will redirect us to main page or says "page not found"
Exporting the OOB portal page helps resolve the issue.
If you go to service portal table (sp_portal) and look with the sys_id - fafd2d039370220064f572edb67ffb34 on instance where it is not redirecting us to resource workbench portal page.
You will not find the record. So go to OOB instance and look with the above sys_id and export the record and import in