Hi there,
There's a few ways to view the logs for your application.
- Go to the Azure Web App > Diagnose and solve problems > Diagnostic Tools > Application Event Logs:
- Ensure Log Streaming is turned on > App Service Logs (Under Monitoring) > 'Application logging: on - then you can click on 'Log stream' and refresh your App to get the error, the stream terminal should help give you more information on the error. There is a guide on how to set this one up located here:
Hope this answers your question. Please mark it as accepted if it has.