BigIP Report Old

I have used the bigipReport app for 3-4 years and it is awesome. I currently am still on version 4.7.5 on Windows server 2012, bigip version 14.1.2.2 and running the web server on RHEL 7 linux. All working perfectly. I am testing bigipreport 5.2.9 on Windows server 2019 with the rest of the set up the same. 

It seems to be collecting all the json information correctly, all the files are getting updated, virtual servers, pools, irules, certificates, etc and it creates an index.html file but is not putting the details of the report into the index.html file. Has anyone seen this behavior before ? I have checked the permissions and run the powershell script as administrator. All seems fine. I am not trying to use real time status yet. I have not found any errors from the bigipreport log.

Any thoughts or tips on what to check.

Kind Regards,

Tom