Browsers still interprets outdated Universal Google Analytics code instead of GTAG4 code in the serv

I currently use ColdFusion for my site and I'm running into this issue. Even after removing the outdated Universal Google Analytics code from both the codebase files and the server, multiple browsers on different computers still interpret this obsolete code when using the Inspect Element feature. Surprisingly, the browsers fail to recognize the newly implemented GTAG 4 code that I have replaced it with. I have ensured that the old code for Universal Google Analytics has been completely eliminated and is not referenced by any component. Even visitors who have never accessed my site before encounter the same issue with the presence of the outdated analytics code. It appears that ColdFusion, despite the absence of Universal Analytics on the server, is somehow unable to detect the new GTAG 4 code. This puzzling situation has left me unable to identify the root cause.