Unable to develop Reports using Jasperreports

Issue

• We recently developed a custom "Minute by Minute Host Data" report, but are getting a Javascript error when running from iReport.

1 - org.mozilla.javascript.ContextFactory.enterContext()Lorg/mozilla/javascript/Context; 
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java.lang.Exception: 1 - org.mozilla.javascript.ContextFactory.enterContext()Lorg/mozilla/javascript/Context; 
    at com.jaspersoft.ireport.jasperserver.ws.WSClient.runReport(WSClient.java:403) 
    at com.jaspersoft.ireport.jasperserver.ws.WSClient.runReport(WSClient.java:320) 
    at com.jaspersoft.ireport.jasperserver.ReportRunner.run(ReportRunner.java:70) 
    at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) 
    at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)