Weird Google Error Message

Huh, what’s this?*

[Thanks Peter H., who told me “I crashed a Google server...”.]

*At the moment the page reads nothing but “java.lang.NullPointerException at java.util.regex.Matcher.getTextLength(Unknown Source) at java.util.regex.Matcher.reset(Unknown Source) at java.util.regex.Matcher.(Unknown Source) at java.util.regex.Pattern.matcher(Unknown Source) at com.google.searchapi.server.StaticFileFilter.doFilter(StaticFileFilter.java:65) at com.google.gse.FilteredServlet$Chain.doFilter(FilteredServlet.java:102) at com.google.gse.FilteredServlet.service(FilteredServlet.java:82) at com.google.gse.HttpConnection.runServlet(HttpConnection.java:472) at com.google.gse.HttpConnection.run(HttpConnection.java:397) at com.google.gse.DispatchQueue$WorkerThread.run(DispatchQueue.java:266)”