Cannot GET index.html Azure Linux Web App

We created a Linux Web App in Microsoft Azure. The application is static written with React (html and Javascript).We copied the code into the wwwroot folder, but the application only showing only hostingstart.html and when we try to get page index.html we have this error:Cannot GET /index.html

We tried with a sample of Azure in GitHub (https://github.com/Azure-Samples/html-docs-hello-world) but the error is the same.The url is this: https://consoleadmin.azurewebsites.net/index.html

Last week the application was running correctly.

We forget to do something?