Using a debugger you should get this error from the Azure OpenAI servers:
{"error":{"code":"429","message": "Requests to the ChatCompletions_Create Operation under Azure OpenAI API version 2024-04-01-preview have exceeded call rate limit of your current OpenAI S0 pricing tier. Please retry after 10 seconds. Please go here: https://aka.ms/oai/quotaincrease if you would like to further increase the default rate limit."}}
Please check your Azure Open AI subscription limits.