That happened to me yesterday and I kept getting following Error Message:
"Element NewGame.ID1 is undefined in SESSION.
Resources:
Enable Robust Exception Information to provide greater detail about the source of errors. In the Administrator, click Debugging & Logging > Debug Output Settings, and select the Robust Exception Information option.
Check the ColdFusion documentation to verify that you are using the correct syntax.
Search the Knowledge Base to find a solution to your problem.
Browser Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36 Edg/88.0.705.63
Remote Address 175.35.151.162
Referrer
http://acwgcrecords.net/NewGameRegA.cfm"
I tried several times, even shutting down my computer entirely but nothing seemed to work.
Magically, it then was fine a few hours later when I tried again.