@Isaura Natalí Velásquez Mendoza Thanks for the question, Can you please add more details about the region and error details. There is known issue in the Azure open AI portal for deploying the webapp. I have forwaded to the team to check.
we have just created a simple chatbot using Azure OpenAI made it available on GH.
It is basic web app that runs both the code and the front-end and can be located here. Have a look at this great repo.