HI,
if I try to debug my service, Web Api Tester starts but closes immediately. The Snap Developer version is old but has always worked.
Here is the console output:

Web API Tester->The test service has started and is listening on port 65533.
Host-> info: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[0]
Host-> User profile is available. Using 'C:\Users\umberto\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest.
Host-> Hosting environment: Development
Host-> Content root path: C:\Users\umberto\Sata_sviluppo\WebService\MM1_WS_SKU\MM1_WS_SKU
Host-> Now listening on: https://localhost:5001
Host-> Now listening on: http://localhost:5000
Host-> Application started. Press Ctrl+C to shut down.
Host->
The process has exited.
Web API Tester->Test client is closed, port number 56733.
Host->Web API Tester stop.

What can be changed?

Thanks