This issue: https://issues.redhat.com/browse/RHIDP-4759 introduced some breaking changes due to which the steps to enable the Tech Radar Plugin has to be changed.

Method 1: Using Hosted JSON files to provide data to the tech radar plugin

Prerequisites:

• Configure integrations from which the data to be displayed by the tech radar plugin will be fetched, under the integrations section of ` app-config.yaml` file.

Procedure:

• Enable the  `./dynamic-plugins/dist/backstage-community-plugin-tech-radar` and `
  ./dynamic-plugins/dist/backstage-community-plugin-tech-radar-backend-dynamic` plugins
• Add the following to the app-config.yaml file:

  techRadar:        
      url: ${TECH_RADAR_DATA_URL}

  Where `TECH_RADAR_DATA_URL` refers to the URL from which JSON data is to be loaded. 

Method 2: Using a Dedicated Service to provide data to the tech radar Page
1.  Add the dedicated service as an allowed host by adding the following to app-config.yaml:

• backend:    
     reading:    
          allow:     
            - host: 'hostname'

  2. Add the following to the app-config.yaml file:

  techRadar:        
      url: ${TECH_RADAR_DATA_URL}

  Where `TECH_RADAR_DATA_URL` refers to the URL from which JSON data is to be loaded.