Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

java.lang.NullPointerException: 	at owltools.cli.CommandRunner.runSingleIteration(CommandRunner.java:531)	at owltools.cli.CommandRunnerBase.run(CommandRunnerBase.java:76)	at owltools.cli.CommandRunner.run(CommandRunner.java:237)	at owltools.cli.CommandRunnerBase.run(CommandRunnerBase.java:68)	at owltools.cli.CommandRunner.run(CommandRunner.java:237)	at owltools.cli.CommandLineInterface.main(CommandLineInterface.java:12)