There was a technical issues on one of our hypervisor hosts and we needed to perform an urgent reboot of the hypervisor host earlier this morning to resolve the underlying technical problem. This affected some servelets hosted on the hypervisor host. The problem has since been resolved and all affected servelets are either up and running or in the process of starting up.
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If your servelet is affected, please do let us know if you are still having difficulties in accessing your servelets now. We apologise for the inconvenience caused.