Description of problem:
"404: Not Found" appears before the VMIM details is loaded

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Migrating a VM
2. Navigate to Virtualization -> Overview -> Migrations
3. Click the VMIM link in the right bottom

Actual results:
"404: Not Found" appears before the VMIM details is loaded

Expected results:
no "404: Not Found" appears

Additional info: