Syntax error (in RainerScript)
This most often occurs with RainerScript (though in theory the error code may be issued for other syntax errors as well).
An incorrect syntax was found inside a RainerScript expression. To fix it, check the expression closely (if you don’t find the error, you may want to post the expression to the rsyslog mailing list).
This is a stub entry: If you have questions please post a comment or visit the github issue tracker.