ChatGPT4 Plus - Hmm...something seems to have gone wrong

I have been getting this response for a few days “Hmm…something seems to have gone wrong.” and unable to use a service I’m paying for. ChatGPT3.5 works fine.

What’s going on with OpenAI???

I cant usr ChatGPT 4 at all (no plugins used) but still showing Oops, an error occurred!