[An Exception has occured in application: Invalid session or session Timeout. ( Session is not initialized. )]

I honestly don't think the problem is caused by the code.My application running on another server is not running on this server either.Another error that popped up: 

An Exception has occured in application:

Access is denied

I gave full permission for IUSR and IIS_IUSRS users to the folder where the application is located. as if the server is not allowing the application to create sessions.Environment Windows 2016 Server and. IIS 10.0 . What setting change should be made that could cause this error.

[An Exception has occured in application: Invalid session or session Timeout. ( Session is not initialized. )]

Session Timeout 600000 on ServerModul...

[An Exception has occured in application: Invalid session or session Timeout. ( Session is not initialized. )]

Hello

Although I can't do all the steps at http://www.unigui.com/doc/online_help/iis_7_0.htm I get the error in the title on the client server. Can anybody help?

[Customized google map and uniMap]

Hello there

I want to mark (maybe draw) parcels in a field and area on google map and search for these parcels. The map can be created in the Google account with the drawings I mentioned. How can I integrate these maps into the uniMap component. Or is there any other component that I can go through more easily.

Thanks