Backstop report not open when increase the number of urls in path.config array although no test case failed.

Backstop report not open when increase the number of urls in path.config array although no test case failed.
This is the status of my console.
openReport | Opening report.
COMMAND | Command `openReport` successfully executed
Report not open in the browser and browser shows the error "The requested URL could not be retrieved". I think report is not opening in the browser because of heavy content of the screen shots. I tried to customized the junit report generated by the backstop but not found any solution. The thing which I want to do is that I only want to show the failed screen shots which have difference in the work report not all the pages. If this thing is possible then my report become very light and will also take less time to open in the browser. If there is any solution to do this thing in the report, Please suggest.