ad blocking extension prevents some CABI reports to run

Document ID : KB000106073
Last Modified Date : 11/07/2018
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Issue:
I have recently installed and integrated CABI Jaspersoft 6.3 with Spectrum 10.2.3. I can run some reports for Alarms but when trying to run 'Top N Alarms' report - the report starts to come up and show data but only the report title - the rest of the report never loads.

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If I schedule the report, an error is generated: 

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Environment:
Spectrum 10.2.3
CABI Jaspersoft 6.3
Windows OS
Cause:
After checking the Tomcat log, no definitive cause was determined. However when we tried another browser, we were able to pull up reports. 
Resolution:
We are using Chrome browser. We tried using Incognito mode, and the reports worked. We determined that an ad-blocking extension "uBlock" was blocking a request that got made when running the report. Once we disabled uBlock for our CABI server's domain, the reports are running perfectly.