Symproxy HealthCheck returning error "Received HTTP/0.9 when not allowed"

On-premises Symproxy component Healthcheck gives the following output while executing the Healthcheck URL from the Symproxy server:

Using Curl Healthcheck:
curl -k http://localhost:8081/Healthcheck

Result:
curl: (1) Received HTTP/0.9 when not allowed

To fix this issue:

1. Log in to the Symproxy Server.
2. Navigate to the Symproxy configuration directory.
3. Open the application.properties configuration file using vi editor.
4. Add this line:

   healthcheck.ssl.use=false

5. Save the file.
6. Execute Healthcheck:

   curl -k http://localhost:8081/Healthcheck

7. You should now see all the details of the Symproxy status.