Cannot create a blank site and page on DXP GA1 +FP20 Widlfly server

• Type: Regression Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.0.0 DXP FP20
• Fix Version/s: 7.0.3 CE GA4
• Component/s: Frontend Infrastructure
• Labels: None
• Fix Priority: 4
• Browsers:
  Chrome (latest), Internet Explorer 11

Steps to reproduce:

1.  Start the DXP GA1 wildfly server with patched FP20.
2.  Login as admin and try to create a blank site.

Actual Result:
The new site page turn to grey, user cannot create a site.

Expected Result:
User can create a blank site.

Note: This issue exist on Chrome browser and IE, it works on Firefox.