After installing ArcGIS Solutions for ArcGIS Enterprise, the Solutions Gallery is empty

Description

When ArcGIS Solutions for ArcGIS Enterprise is installed with ArcGIS Enterprise, the ArcGIS Solutions gallery appears empty.

Note: 
ArcGIS Solutions for ArcGIS Enterprise is only available for install on ArcGIS Enterprise 10.9 and 10.9.1 (Windows, Linux).

Cause

There may be two causes for this issue:

• During the installation process, Solution Item content is added to ArcGIS Enterprise. These items are not being recognized by ArcGIS Enterprise.
• Encountering an existing defect. 

Solution or Workaround

During the installation process, Solution Item content is added to ArcGIS Enterprise

Perform a reindex on the ArcGIS Enterprise portal.

1. Sign in to the ArcGIS Enterprise Portal Administrator Directory with administrator credentials.
2. Navigate to System > Indexer > Reindex.
3. Perform a full reindex.

Note: 
This causes the ArcGIS Enterprise portal instance to restart.

If you’re still encountering this issue after performing a reindex, please contact Esri Technical Support for further assistance.

Encountering an existing defect:

• BUG-000147009 : After installing ArcGIS Solutions in an ArcGIS Enterprise 10.9.1 environment, the ArcGIS Solutions Gallery is empty.
• Status: In Review
• Workarounds (not guaranteed):
  • Click on the Relevance tab > Title, and all the solutions appear.
  • Reinstall ArcGIS Solutions and restart Portal. 
• Contact Technical Support to attach your organization to the defect.