In the past 2 weeks this happened more than once.
This a CDN service , so its unacceptable that this downtimes happen - its at least the second time this happens in a 2, 3 week window.
We are sorry for the trouble this would have caused. The incident on the day you raised the question is reported here - https://imagekitio.statuspage.io/. However we strive for keeping our uptime as close to 100% as possible and are continuously working on improving the same.