I have had a space with a Gradio interface that I use and it has been running perfectly for months. All of a sudden I got an error making a call to the API - my returned file said it could not load due to a certificate error. I have made no changes at all. When I check the space on hugging face it says it is running fine but where my gradio interface should be is: The web page at https://huggingface.co/proxy/mysspace.hf.space/?__theme=system might be temporarily down or it may have moved permanently to a new web address.
As I said I have not changed a thing - there is nothing in the logs the last line of output is * Running on local URL: http://0.0.0.0:7860, with SSR 
Obviously I have restarted the space several times.
Does anyone know what this could be?