Keep receiving Ajax error when running reports ' Cannot read property of document NULL'

Keep receiving Ajax error when running reports ' Cannot read property of document NULL'

Since we first installed Service Desk plus the reports have not worked correctly. I opened a support ticket and they had me remove the reports directory and restart the services. When I did that it recreated the directory and one report worked one time. Shortly afterwards, it continued to generate the error repeatedly. Has anyone else encountered this problem?

I just trying to pull a worklog ( hours) report.

Adam

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