Unable to send Dashboards as Email Report

Am able to send emailable reports without any issues, but whenever, I schedule an emailable reports for the Dashboard created by me, am getting the following exception and the emails are not going through. Is there anything that am missing ?

 

2016-11-03 10:39:13,776 ERROR ReportExecutionJob,quartzScheduler_Worker-2:354 - The job was not completed. A system error occurred while running it.

java.lang.IllegalStateException: The path to the driver executable must be set by the phantomjs.binary.path capability/system property/PATH variable; for more information, see https://github.com/ariya/phantomjs/wiki. The latest version can be downloaded from http://phantomjs.org/download.html

        at com.google.common.base.Preconditions.checkState(Preconditions.java:197)

        at org.openqa.selenium.phantomjs.PhantomJSDriverService.findPhantomJS(PhantomJSDriverService.java:237)

        at org.openqa.selenium.phantomjs.PhantomJSDriverService.createDefaultService(PhantomJSDriverService.java:182)

        at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:99)

        at com.jaspersoft.ji.remote.dashboard.CallableDriverAdapter.initDriver(CallableDriverAdapter.java:113)

        at com.jaspersoft.ji.remote.dashboard.CallableDriverAdapter.<init>(CallableDriverAdapter.java:62)

        at com.jaspersoft.ji.remote.dashboard.ExportDashboardService.createExportJob(ExportDashboardService.java:104)

        at com.jaspersoft.ji.remote.dashboard.DashboardExecutionJob.initJobExecution(DashboardExecutionJob.java:82)

        at com.jaspersoft.jasperserver.api.engine.scheduling.quartz.ReportExecutionJob.executeAndSendReport(ReportExecutionJob.java:466)

        at com.jaspersoft.jasperserver.api.engine.scheduling.quartz.ReportExecutionJob.execute(ReportExecutionJob.java:243)

        at com.jaspersoft.ji.report.options.engine.ReportOptionsExecutionJob.execute(ReportOptionsExecutionJob.java:47)

        at org.quartz.core.JobRunShell.run(JobRunShell.java:213)

        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557)