To reproduce, leave time_keys empty and make a | jira search.
2013-11-05 11:49:10,270 ERROR Invalid expression
Traceback (most recent call last):
File "/opt/splunk/etc/apps/jira/bin/jira.py", line 91, in
v = elem.xpath(k)
File "lxml.etree.pyx", line 1447, in lxml.etree._Element.xpath (src/lxml/lxml.etree.c:41728)
File "xpath.pxi", line 321, in lxml.etree.XPathElementEvaluator.call (src/lxml/lxml.etree.c:117734)
File "xpath.pxi", line 239, in lxml.etree._XPathEvaluatorBase._handle_result (src/lxml/lxml.etree.c:116911)
File "xpath.pxi", line 225, in lxml.etree._XPathEvaluatorBase._raise_eval_error (src/lxml/lxml.etree.c:116780)
XPathEvalError: Invalid expression
Reported originally in #13, spinning off a separate Issue/Bug for this.