After importing csv from file we get such a log.
http-nio-8080-exec-12 ERROR [o.a.c.c.C.[.[localhost].[/].[action]] Servlet.service() for servlet [action] in context with path  threw exception [java.lang.NullPointerException] with root cause
at com.xpandit.raven.csvimport.web.XrayFieldMappingsPage.doValidation(Unknown Source)
... 7 filtered
... 50 filtered
... 66 filtered
... 90 filtered
Jira version 7.1.9
I'm not sure if Xray folks will find this topic (vendors typically browse here every now and then and come to the rescue, but it's more of a best effort basis). The stacktrace indeed points to something specific to Xray (in their code), so you might want to raise a support ticket with them directly:
Of course they likely will want to know how to reproduce it, as the stacktrace itself does indicate the location, but not much more beyond that, chances are it's something in the data you are importing that hits the bug, it could be a specific value, it could be a specific field, although it's more up to them to dig into that in more detail.
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